The Christian conceives of his abode on Earth in no more delightful colors than the Jainist sectarian. He sees in it only a time of sad trial; he also thinks that his true country is not of this world.

From the physical point of view, a man is nothing more than a system of cells, or from the mental point of view, than a system of representations; in either case, he differs only in degree from animals.

Man seeks to learn, and man kills himself because of the loss of cohesion in his religious society; he does not kill himself because of his learning. It is certainly not the learning he acquires that disorganizes religion; but the desire for knowledge wakens because religion becomes disorganized.

The individual can maintain himself in a society definitely organized only through possessing an equally definite mental and moral constitution. This is what the neuropath lacks. His state of disturbance causes him to be constantly taken by surprise by circumstances.

A monomaniac is a sick person whose mentality is perfectly healthy in all respects but one; he has a single flaw, clearly localized. At times, for example, he has an unreasonable and absurd desire to drink or steal or use abusive language; but all his other acts and all his other thoughts are strictly correct.

Our whole social environment seems to us to be filled with forces which really exist only in our own minds.