To require a citizen to sign a loyalty oath is to destroy some of the loyalty he could otherwise claim, since any subsequent loyal behavior may then be attributed to the oath.

The alphabet was a great invention, which enabled men to store and to learn with little effort what others had learned the hard way-that is, to learn from books rather than from direct, possibly painful, contact with the real world.

Punitive measures whether administered by police, teachers, spouses or parents have well known standard effects: (1) escape-education has its own name for that: truancy, (2) counterattack-vandalism on schools and attacks on teachers, (3) apathy-a sullen do-nothing withdrawal. The more violent the punishment, the more serious the by-products.

An important fact about verbal behavior is that speaker and listener may reside within the same skin.

I will be dead in a few months. But it hasn't given me the slightest anxiety or worry. I always knew I was going to die.

Science is a willingness to accept facts even when they are opposed to wishes.

Society attacks early, when the individual is helpless.