1-11. Natural signs. 12-21. Artificial signs—language—social will. 22-28. Individual will—forms of will—signs through will. 29-39. Customs and legislation—custom in language and legislation in language. 40. Science and language. 41-47. The social will of others in language. 48-53. Compact—connexion of convention—legislation—science. 54-55. Analogy of money. 56-60. Classification of the forms of the social will—methods of communication and explanation. 61. Science as form of the social will.
62-68. 1, general causes—three arguments—referred to the forms of the social will. 69-71. 2, Historical causes. 72-78. 3, hindrances from the differences of thought—reflex of the history of philosophy—criticism of the mechanical rationalism—new concepts. 79. Conflict of terminologies. 80-81. Application to the doctrine of the will. 82-84. Additional causes—hindrances. 85. Philosophy in higher education and in public life.
86-91. International character of science—tendencies towards it. 92-96. Idea of an international academy.