"The only way to live a meaningful life is to think."

"The greatest evil in the world is the evil which is done by nobody, the evil which is done by all of us."

"The only way to escape the personal consequences of freedom is to give up the very freedom itself."

"The sad fact is that the evil in this world is in general not done by evil people, but by good people who are not good enough."

"The most effective way to destroy people is to deny and obliterate their own understanding of their history."