“Adversity introduces a man to himself.”

“The Revolution introduced me to art, and in turn, art introduced me to the Revolution!”

“Concern for man himself and his fate must always constitute the chief objective of all technological endeavors...in order that the creations of our mind shall be a blessing and not a curse to mankind. Never forget this in the midst of your diagrams and equations.”

“I believe in Spinoza's God, who reveals Himself in the lawful harmony of the world, not in a God who concerns Himself with the fate and the doings of mankind... to Rabbi Herbert Goldstein (1929)”

“A person starts to live when he can live outside himself.”

“Whoever undertakes to set himself up as a judge of Truth and Knowledge is shpwrecked by the laughter of the gods.”

“The state was made for man, not man for state.”