It is not a question of starting. The start has been made. It's a question of what's to be done from now on.

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

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.

At this very moment enormous numbers of intelligent men and women of goodwill are trying to build a better world. But problems are born faster than they can be solved.

The world's a poor standard. any society which is free of hunger and violence looks bright against that background.

The way positive reinforcement is carried out is more important than the amount.

The speaker does not feel the grammatical rules he is said to apply in composing sentences, and men spoke grammatically for thousands of years before anyone knew there were rules.