"It is not the quantity of knowledge but the quality of knowledge that determines the future of humanity."

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

"The greater the state, the more wrong and cruel its patriotism, and the greater is the sum of suffering upon which its power is founded."

"What a man is depends on what he believes."

"People are afraid of the truth, of real love, of being loved."