Philosophy is based on speculation, on logic, on thought, on the synthesis of what we know and on the analysis of what we do not know. Philosophy must include within its confines the whole content of science, religion and art.

I have become so accustomed to think "scientifically" that I am afraid even to imagine that there may be something else beyond the outer covering of life. I feel like a man condemned to death, whose companions have been hanged and who has already become reconciled to the thought that the same fate awaits him.

It is by overcoming obstacles that man develops those qualities he needs.

People live in sleep, do everything in sleep, and do not know they are asleep.

I felt that on a basis of a "search for the miraculous" it would be possible to unite together a very large number of people who were no longer able to swallow the customary forms of lying and living in lying.

When a man begins to know himself a little he will see in himself many things that are bound to horrify him. So long as a man is not horrified at himself he knows nothing about himself.

Understanding is always the understanding of a smaller problem in relation to a bigger problem.