Flattery is useful when dealing with youngsters.

The day you stop learning is the day you begin decaying.

All the hundreds of millions of people who, in their time, believed the Earth was flat never succeeded in unrounding it by an inch.

Radiation, unlike smoking, drinking, and overeating, gives no pleasure, so the possible victims object.

He had read much, if one considers his long life; but his contemplation was much more than his reading. He was wont to say that if he had read as much as other men he should have known no more than other men.

People think of education as something that they can finish.

Postulates are based on assumption and adhered to by faith. Nothing in the Universe can shake them.