"Man lives consciously for himself, but is an unconscious instrument in the attainment of the historic, universal aims of humanity."

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

"War is so unjust and ugly that all who wage it must try to stifle the voice of conscience within themselves."

"Without knowing what I am and why I am here, it is impossible for me to live, and I cannot know that; therefore I cannot live."

"Art is a human activity having for its purpose the transmission to others of the highest and best feelings to which men have risen."