In teaching you cannot see the fruit of a day's work. It is invisible and remains so, maybe for twenty years.

The mind tends to run along the groove of one's intention and overlook the actual expression.

The world has long observed that small acts of immorality, if repeated, will destroy character. It is equally manifest, though never said, that uttering nonsense and half-truth without cease ends by destroying Intellect

Maxims in times of danger are useless, experience is incommunicable. The knotted strands of life, desire, assumptions, and moral codes cannot be unsnarled; they can only be cut, which is what happens when an air raid occurs, with a silencing fortissimo like the finale of a Beethoven symphony.

For the educated, the authority of science rested on the strictness of its methods; for the mass, it rested on the powers of explanation.

I once worked as a salesman and was very independent. I took orders from no one.

Only a great mind that is overthrown yields tragedy