"There is no proletarian, not even a Communist movement, that has not operated in the interests of money, and for the time being permitted by money - and that without the idealists among its leaders having the slightest suspicion of the fact."

"Socialism is nothing but the capitalism of the lower classes."

"I maintain that many an inventor, many a diplomat, many a financier is a sounder philosopher than all those who practice the dull craft of experimental psychology."

"If few can stand a long war without deterioration of soul, none can stand a long peace."

"This is our purpose: to make as meaningful as possible this life that has been bestowed upon us; to live in such a way that we may be proud of ourselves; to act in such a way that some part of us lives on."