We can know only that we know nothing. And that is the highest degree of human wisdom.

True science investigates and brings to human perception such truths and such knowledge as the people of a given time and society consider most important. Art transmits these truths from the region of perception to the region of emotion.

A man can live and be healthy without killing animals for food; therefore, if he eats meat, he participates in taking animal life merely for the sake of his appetite.

Pierre was right when he said that one must believe in the possibility of happiness in order to be happy, and I now believe in it. Let the dead bury the dead, but while I'm alive, I must live and be happy.

He sought his former accustomed fear of death and did not find it. "Where is it? What death?" There was no fear because there was no death. In place of death there was light.

Music makes me forget myself, my true condition, it carries me off into another state of being, one that isn't my own: under the influence of music I have the illusion of feeling things I don't really feel, of understanding things I don't understand, being able to do things I'm not able to do... Can it really be allowable for anyone who feels like it to hypnotize another person, or many other persons, and then do what he likes with them? Particularly if the hypnotist is the first unscrupulous individual who happens to come along?

The most difficult subjects can be explained to the most slow- witted man if he has not formed any idea of them already; but the simplest thing cannot be made clear to the most intelligent man if he is firmly persuaded that he knows already, without a shadow of doubt, what is laid before him.