Let every man judge according to his own standards, by what he has himself read, not by what others tell him.

If they want to see me, here I am. If they want to see my clothes, open my closet and show them my suits.

It seems to me that the idea of a personal God is an anthropological concept which I cannot take seriously. I feel also not able to imagine some will or goal outside the human sphere. My views are near those of Spinoza: admiration for the beauty of and belief in the logical simplicity of the order which we can grasp humbly and only imperfectly. I believe that we have to content ourselves with our imperfect knowledge and understanding and treat values and moral obligations as a purely human problem-the most important of all human problems.

One who scorns the power of intuition will never rise above the ranks of journeyman calculator.

Every day I remind myself that my inner and outer life are based on the labors of other men, living and dead, and that I must exert myself in order to give in the same measure as I have received and am still receiving.

The most incomprehensible thing about the world is that it is comprehensible.

Nothing causes more consternation in a group of hypocrits than one honest man.