Quotes by Scientist

A young man is not a proper hearer of lectures on political science; for he is inexperienced in the actions that occur in life, but its discussions start from these and are about these; and, further, since he tends to follow his passions, his study will be vain and unprofitable, because the end that is aimed at is not knowledge but action. And it makes no difference whether he is young in years or youthful in character.

We must not feel a childish disgust at the investigations of the meaner animals. For there is something marvelous in all natural things.

Whatever we learn to do, we learn by actually doing it; men come to be builders, for instance, by building, and harp players by playing the harp. In the same way, by doing just acts we come to be just; by doing self-controlled acts, we come to be self-controlled ; and by doing brave acts, we become brave.

He who cannot be a good follower cannot be a good leader.

The Eyes are the organs of temptation, and the Ears are the organs of instruction.

All teaching and all intellectual learning come about from already existing knowledge.

There are no experienced young people. Time makes experience.

The greatest of all pleasures is the pleasure of learning.

But the virtues we get by first exercising them, as also happens in the case of the arts as well. For the things we have to learn before we can do them, we learn by doing them, e.g. men become builders by building and lyre players by playing the lyre; so too we become just by doing just acts, temperate by doing temperate acts, brave by doing brave acts.

People do not naturally become morally excellent or practically wise. They become so, if at all, only as the result of lifelong personal and community effort.