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Chapter companions for Tractatus Logico-Philosophicus by Ludwig Wittgenstein.

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  1. Chapter 1

    Dedication

    The chapter is a brief dedication of the work to the memory of David H. Pinsent, a close friend of the author.

  2. Chapter 2

    Epigraph

    The chapter opens with a quotation from Kürnberger, suggesting that everything worth knowing can be expressed in just three words, setting a tone of linguistic economy and the limits of expression.

  3. Chapter 3

    Tractatus Logico-Philosophicus

    The chapter presents the foundational propositions of Wittgenstein's logical atomism, arguing that the world consists of facts rather than things, and that language pictures reality through propositions. It explores the limits of language, the nature of logical form, and the mystical realm beyond what can be said.

  4. Chapter 4

    The World is Everything That is the Case

    The chapter opens with the foundational assertion that the world consists of all that is the case, establishing the scope of reality as the totality of facts.

  5. Chapter 5

    1.1

    Wittgenstein asserts that the world consists of facts, not things, establishing a foundational distinction for his logical atomism.

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  1. Chapter 61.11
  2. Chapter 71.12
  3. Chapter 81.13
  4. Chapter 91.2
  5. Chapter 101.21
  6. Chapter 11Chapter 2: The Existence of Atomic Facts
  7. Chapter 122.01
  8. Chapter 132.011
  9. Chapter 142.012
  10. Chapter 152.0121
  11. Chapter 162.0122
  12. Chapter 172.0123
  13. Chapter 182.01231
  14. Chapter 192.0124
  15. Chapter 202.013
  16. Chapter 212.0131
  17. Chapter 222.014
  18. Chapter 232.0141
  19. Chapter 242.02
  20. Chapter 252.0201
  21. Chapter 262.021
  22. Chapter 272.0211
  23. Chapter 282.0212
  24. Chapter 292.022
  25. Chapter 302.023
  26. Chapter 312.0231
  27. Chapter 322.0232
  28. Chapter 332.0233
  29. Chapter 342.02331
  30. Chapter 352.024
  31. Chapter 362.025
  32. Chapter 372.0251
  33. Chapter 382.026
  34. Chapter 392.027
  35. Chapter 402.0271
  36. Chapter 412.0272
  37. Chapter 422.03
  38. Chapter 432.031
  39. Chapter 442.032
  40. Chapter 452.033
  41. Chapter 462.034
  42. Chapter 472.04
  43. Chapter 482.05
  44. Chapter 492.06
  45. Chapter 502.061
  46. Chapter 512.062
  47. Chapter 522.063
  48. Chapter 532.1
  49. Chapter 542.11
  50. Chapter 552.12
  51. Chapter 562.13
  52. Chapter 572.131
  53. Chapter 582.14
  54. Chapter 592.141
  55. Chapter 602.15
  56. Chapter 612.151
  57. Chapter 622.1511
  58. Chapter 632.1512
  59. Chapter 642.15121
  60. Chapter 652.1513
  61. Chapter 662.1514
  62. Chapter 672.1515
  63. Chapter 682.16
  64. Chapter 692.161
  65. Chapter 702.17
  66. Chapter 712.171
  67. Chapter 722.172
  68. Chapter 732.173
  69. Chapter 742.174
  70. Chapter 752.18
  71. Chapter 762.181
  72. Chapter 772.182
  73. Chapter 782.19
  74. Chapter 792.2
  75. Chapter 802.201
  76. Chapter 812.202
  77. Chapter 822.203
  78. Chapter 832.21
  79. Chapter 842.22
  80. Chapter 852.221
  81. Chapter 862.222
  82. Chapter 872.223
  83. Chapter 882.224
  84. Chapter 892.225
  85. Chapter 90Chapter 3
  86. Chapter 913.001
  87. Chapter 923.01
  88. Chapter 933.02
  89. Chapter 943.03
  90. Chapter 953.031
  91. Chapter 963.032
  92. Chapter 973.0321
  93. Chapter 983.04
  94. Chapter 993.05
  95. Chapter 1003.1
  96. Chapter 1013.11
  97. Chapter 102The Propositional Sign and Its Projective Relation
  98. Chapter 1033.13
  99. Chapter 1043.14
  100. Chapter 1053.141
  101. Chapter 1063.142
  102. Chapter 1073.143
  103. Chapter 1083.1431
  104. Chapter 1093.1432
  105. Chapter 1103.144
  106. Chapter 1113.2
  107. Chapter 1123.201
  108. Chapter 1133.202
  109. Chapter 1143.203
  110. Chapter 1153.21
  111. Chapter 1163.22
  112. Chapter 1173.221
  113. Chapter 1183.23
  114. Chapter 1193.24
  115. Chapter 1203.25
  116. Chapter 1213.251
  117. Chapter 1223.26
  118. Chapter 1233.261
  119. Chapter 1243.262
  120. Chapter 1253.263
  121. Chapter 1263.3
  122. Chapter 1273.31
  123. Chapter 1283.311
  124. Chapter 1293.312
  125. Chapter 1303.313
  126. Chapter 1313.314
  127. Chapter 1323.315
  128. Chapter 1333.316
  129. Chapter 1343.317
  130. Chapter 1353.318
  131. Chapter 1363.32
  132. Chapter 1373.321
  133. Chapter 1383.322
  134. Chapter 1393.323
  135. Chapter 1403.324
  136. Chapter 1413.325
  137. Chapter 1423.326
  138. Chapter 1433.327
  139. Chapter 1443.328
  140. Chapter 1453.33
  141. Chapter 1463.331
  142. Chapter 1473.332
  143. Chapter 1483.333
  144. Chapter 1493.334
  145. Chapter 150Essential and Accidental Features of Propositions
  146. Chapter 1513.341
  147. Chapter 1523.3411
  148. Chapter 1533.342
  149. Chapter 1543.3421
  150. Chapter 1553.343
  151. Chapter 1563.344
  152. Chapter 1573.3441
  153. Chapter 1583.3442
  154. Chapter 159The Proposition Determines a Place in Logical Space
  155. Chapter 1603.41
  156. Chapter 1613.411
  157. Chapter 1623.42
  158. Chapter 1633.5
  159. Chapter 164Chapter 4: The Thought is the Significant Proposition
  160. Chapter 1654.001
  161. Chapter 1664.002
  162. Chapter 1674.003
  163. Chapter 1684.0031
  164. Chapter 1694.01
  165. Chapter 1704.011
  166. Chapter 1714.012
  167. Chapter 1724.013
  168. Chapter 1734.014
  169. Chapter 1744.0141
  170. Chapter 1754.015
  171. Chapter 1764.016
  172. Chapter 1774.02
  173. Chapter 1784.021
  174. Chapter 1794.022
  175. Chapter 1804.023
  176. Chapter 1814.024
  177. Chapter 1824.025
  178. Chapter 1834.026
  179. Chapter 1844.027
  180. Chapter 1854.03
  181. Chapter 1864.031
  182. Chapter 1874.0311
  183. Chapter 1884.0312
  184. Chapter 1894.032
  185. Chapter 1904.04
  186. Chapter 1914.041
  187. Chapter 1924.0411
  188. Chapter 1934.0412
  189. Chapter 1944.05
  190. Chapter 195Propositions as Pictures of Reality
  191. Chapter 1964.061
  192. Chapter 1974.062
  193. Chapter 1984.0621
  194. Chapter 1994.063
  195. Chapter 2004.064
  196. Chapter 2014.0641
  197. Chapter 2024.1
  198. Chapter 2034.11
  199. Chapter 2044.111
  200. Chapter 2054.112
  201. Chapter 2064.1121
  202. Chapter 2074.1122
  203. Chapter 2084.113
  204. Chapter 2094.114
  205. Chapter 2104.115
  206. Chapter 2114.116
  207. Chapter 212The Limits of Representation
  208. Chapter 2134.121
  209. Chapter 2144.1211
  210. Chapter 2154.1212
  211. Chapter 2164.1213
  212. Chapter 2174.122
  213. Chapter 2184.1221
  214. Chapter 2194.123
  215. Chapter 2204.124
  216. Chapter 2214.1241
  217. Chapter 2224.125
  218. Chapter 2234.1251
  219. Chapter 224Formal Series and Internal Relations
  220. Chapter 225Formal Concepts and Proper Concepts
  221. Chapter 2264.127
  222. Chapter 2274.1271
  223. Chapter 2284.1272
  224. Chapter 2294.12721
  225. Chapter 2304.1273
  226. Chapter 2314.1274
  227. Chapter 2324.128
  228. Chapter 2334.2
  229. Chapter 234Elementary Propositions and Atomic Facts
  230. Chapter 2354.211
  231. Chapter 2364.22
  232. Chapter 2374.221
  233. Chapter 2384.2211
  234. Chapter 2394.23
  235. Chapter 2404.24
  236. Chapter 2414.241
  237. Chapter 2424.242
  238. Chapter 2434.243
  239. Chapter 2444.25
  240. Chapter 2454.26
  241. Chapter 2464.27
  242. Chapter 2474.28
  243. Chapter 2484.3
  244. Chapter 2494.31
  245. Chapter 2504.4
  246. Chapter 2514.41
  247. Chapter 2524.411
  248. Chapter 2534.42
  249. Chapter 2544.43
  250. Chapter 2554.431
  251. Chapter 2564.44
  252. Chapter 2574.441
  253. Chapter 2584.442
  254. Chapter 2594.45
  255. Chapter 2604.46
  256. Chapter 2614.461
  257. Chapter 2624.4611
  258. Chapter 2634.462
  259. Chapter 2644.463
  260. Chapter 2654.464
  261. Chapter 2664.465
  262. Chapter 2674.466
  263. Chapter 2684.4661
  264. Chapter 2694.5
  265. Chapter 2704.51
  266. Chapter 2714.52
  267. Chapter 2724.53
  268. Chapter 2735
  269. Chapter 2745.01
  270. Chapter 2755.02
  271. Chapter 2765.1
  272. Chapter 2775.101
  273. Chapter 2785.11
  274. Chapter 2795.12
  275. Chapter 2805.121
  276. Chapter 2815.122
  277. Chapter 2825.123
  278. Chapter 2835.124
  279. Chapter 2845.1241
  280. Chapter 2855.13
  281. Chapter 2865.131
  282. Chapter 2875.1311
  283. Chapter 2885.132
  284. Chapter 2895.133
  285. Chapter 2905.134
  286. Chapter 2915.135
  287. Chapter 2925.136
  288. Chapter 2935.1361
  289. Chapter 2945.1362
  290. Chapter 2955.1363
  291. Chapter 2965.14
  292. Chapter 2975.141
  293. Chapter 2985.142
  294. Chapter 2995.143
  295. Chapter 3005.15
  296. Chapter 3015.151
  297. Chapter 3025.1511
  298. Chapter 3035.152
  299. Chapter 3045.153
  300. Chapter 3055.154
  301. Chapter 3065.155
  302. Chapter 3075.156
  303. Chapter 3085.2
  304. Chapter 3095.21
  305. Chapter 3105.22
  306. Chapter 3115.23
  307. Chapter 3125.231
  308. Chapter 3135.232
  309. Chapter 3145.233
  310. Chapter 315Truth-Operations on Elementary Propositions
  311. Chapter 3165.2341
  312. Chapter 3175.24
  313. Chapter 3185.241
  314. Chapter 3195.242
  315. Chapter 3205.25
  316. Chapter 3215.251
  317. Chapter 3225.252
  318. Chapter 3235.2521
  319. Chapter 3245.2522
  320. Chapter 3255.2523
  321. Chapter 3265.253
  322. Chapter 3275.254
  323. Chapter 3285.3
  324. Chapter 3295.31
  325. Chapter 3305.32
  326. Chapter 3315.4
  327. Chapter 3325.41
  328. Chapter 3335.42
  329. Chapter 3345.43
  330. Chapter 3355.44
  331. Chapter 3365.441
  332. Chapter 3375.442
  333. Chapter 3385.45
  334. Chapter 3395.451
  335. Chapter 3405.452
  336. Chapter 3415.453
  337. Chapter 3425.454
  338. Chapter 3435.4541
  339. Chapter 3445.46
  340. Chapter 3455.461
  341. Chapter 3465.4611
  342. Chapter 3475.47
  343. Chapter 3485.471
  344. Chapter 3495.4711
  345. Chapter 3505.472
  346. Chapter 3515.473
  347. Chapter 3525.4731
  348. Chapter 3535.4732
  349. Chapter 3545.47321
  350. Chapter 3555.4733
  351. Chapter 3565.474
  352. Chapter 3575.475
  353. Chapter 3585.476
  354. Chapter 3595.5
  355. Chapter 3605.501
  356. Chapter 3615.502
  357. Chapter 3625.503
  358. Chapter 3635.51
  359. Chapter 3645.511
  360. Chapter 3655.512
  361. Chapter 3665.513
  362. Chapter 3675.514
  363. Chapter 3685.515
  364. Chapter 3695.5151
  365. Chapter 3705.52
  366. Chapter 3715.521
  367. Chapter 3725.522
  368. Chapter 3735.523
  369. Chapter 3745.524
  370. Chapter 3755.525
  371. Chapter 3765.526
  372. Chapter 3775.5261
  373. Chapter 3785.5262
  374. Chapter 3795.53
  375. Chapter 3805.5301
  376. Chapter 3815.5302
  377. Chapter 3825.5303
  378. Chapter 3835.531
  379. Chapter 3845.532
  380. Chapter 3855.5321
  381. Chapter 3865.533
  382. Chapter 3875.534
  383. Chapter 3885.535
  384. Chapter 3895.5351
  385. Chapter 3905.5352
  386. Chapter 3915.54
  387. Chapter 3925.541
  388. Chapter 3935.542
  389. Chapter 3945.5421
  390. Chapter 3955.5422
  391. Chapter 3965.5423
  392. Chapter 3975.55
  393. Chapter 3985.551
  394. Chapter 3995.552
  395. Chapter 4005.5521
  396. Chapter 4015.553
  397. Chapter 4025.554
  398. Chapter 4035.5541
  399. Chapter 4045.5542
  400. Chapter 4055.555
  401. Chapter 4065.556
  402. Chapter 4075.5561
  403. Chapter 4085.5562
  404. Chapter 4095.5563
  405. Chapter 4105.557
  406. Chapter 4115.5571
  407. Chapter 4125.6
  408. Chapter 4135.61
  409. Chapter 4145.62
  410. Chapter 4155.621
  411. Chapter 4165.63
  412. Chapter 4175.631
  413. Chapter 4185.632
  414. Chapter 4195.633
  415. Chapter 4205.6331
  416. Chapter 4215.634
  417. Chapter 4225.64
  418. Chapter 4235.641
  419. Chapter 424The General Form of Proposition
  420. Chapter 4256.001
  421. Chapter 4266.002
  422. Chapter 4276.01
  423. Chapter 4286.02
  424. Chapter 4296.021
  425. Chapter 4306.022
  426. Chapter 4316.03
  427. Chapter 4326.031
  428. Chapter 4336.1
  429. Chapter 4346.11
  430. Chapter 4356.111
  431. Chapter 4366.112
  432. Chapter 4376.113
  433. Chapter 4386.12
  434. Chapter 4396.1201
  435. Chapter 4406.1202
  436. Chapter 4416.1203
  437. Chapter 4426.121
  438. Chapter 4436.122
  439. Chapter 4446.1221
  440. Chapter 4456.1222
  441. Chapter 4466.1223
  442. Chapter 4476.1224
  443. Chapter 4486.123
  444. Chapter 4496.1231
  445. Chapter 4506.1232
  446. Chapter 4516.1233
  447. Chapter 4526.124
  448. Chapter 4536.125
  449. Chapter 4546.1251
  450. Chapter 4556.126
  451. Chapter 4566.1261
  452. Chapter 4576.1262
  453. Chapter 4586.1263
  454. Chapter 4596.1264
  455. Chapter 4606.1265
  456. Chapter 4616.127
  457. Chapter 4626.1271
  458. Chapter 4636.13
  459. Chapter 4646.2
  460. Chapter 4656.21
  461. Chapter 4666.211
  462. Chapter 4676.22
  463. Chapter 4686.23
  464. Chapter 4696.231
  465. Chapter 4706.232
  466. Chapter 4716.2321
  467. Chapter 4726.2322
  468. Chapter 4736.2323
  469. Chapter 4746.233
  470. Chapter 4756.2331
  471. Chapter 4766.234
  472. Chapter 4776.2341
  473. Chapter 4786.24
  474. Chapter 4796.241
  475. Chapter 4806.3
  476. Chapter 4816.31
  477. Chapter 4826.32
  478. Chapter 4836.321
  479. Chapter 4846.3211
  480. Chapter 4856.33
  481. Chapter 4866.34
  482. Chapter 4876.341
  483. Chapter 4886.342
  484. Chapter 4896.343
  485. Chapter 4906.3431
  486. Chapter 4916.3432
  487. Chapter 4926.35
  488. Chapter 4936.36
  489. Chapter 4946.361
  490. Chapter 4956.3611
  491. Chapter 4966.36111
  492. Chapter 4976.362
  493. Chapter 4986.363
  494. Chapter 4996.3631
  495. Chapter 5006.36311
  496. Chapter 5016.37
  497. Chapter 5026.371
  498. Chapter 5036.372
  499. Chapter 5046.373
  500. Chapter 5056.374
  501. Chapter 5066.375
  502. Chapter 5076.3751
  503. Chapter 5086.4
  504. Chapter 5096.41
  505. Chapter 5106.42
  506. Chapter 5116.421
  507. Chapter 5126.422
  508. Chapter 5136.423
  509. Chapter 5146.43
  510. Chapter 5156.431
  511. Chapter 5166.4311
  512. Chapter 5176.4312
  513. Chapter 5186.432
  514. Chapter 5196.4321
  515. Chapter 5206.44
  516. Chapter 5216.45
  517. Chapter 5226.5
  518. Chapter 5236.51
  519. Chapter 5246.52
  520. Chapter 5256.521
  521. Chapter 5266.522
  522. Chapter 5276.53
  523. Chapter 5286.54
  524. Chapter 5297
  525. Chapter 530Endnotes