There is, however, a somber point in the social outlook of Americans. Their sense of equality and human dignity is mainly limited to people of white skin.... The more I feel like an American, the more the situation pains me.

Science will stagnate if it is made to serve practical goals.

Weak people revenge. Strong people forgive. Intelligent People Ignore.

So would a Being, endowed with higher insight and more perfect intelligence, watching man and his doings, smile about man's illusion that he was acting according to his own free will.

Intelligence and genius

The really valuable method of thought to arrive at a logically coherent system is intuition.

To be sure, it is not the fruits of scientific research that elevate a man and enrich his nature, but the urge to understand, the intellectual work, creative or receptive.