It is easier to study the 'behavior' of rats than people, because rats are smaller and have fewer outside commitments. So modern psychology is mostly about rats

The remarkable thing about the human mind is its range of limitations.

Research is a way of taking calculated risks to bring about incalculable consequences.

The human race's favorite method for being in control of facts is to ignore them.

In an autocracy, one person has his way; in an aristocracy, a few people have their way; in a democracy, no one has his way.

Lack of clarity is always a sign of dishonesty.

The charms of money are distinctly under-represented in literature. There are no songs or poems extolling its virtues. This seems on the face of it strange. The claims of money to be celebrated in verse might well seem to be no less than those of faithful dogs, beautiful women, or jugs of wine.