Humor is the only test of gravity, and gravity of humor; for a subject which will not bear raillery is suspicious, and a jest which will not bear serious examination is false wit.

Aristotle

Aristotle

Profession: Philosopher
Nationality: Greek

Some suggestions for you :

The poet's function is to describe, not the thing that has happened, but a kind of thing that might happen, i.e., what is possible as being probable or necessary...Hence poetry is something more philosophic and of graver import than history, since its statements are of the nature rather of universals, whereas those of history are singulars.

The poet, being an imitator like a painter or any other artist, must of necessity imitate one of three objects - things as they were or are, things as they are said or thought to be, or things as they ought to be. The vehicle of expression is language - either current terms or, it may be, rare words or metaphors.

No one loves the man whom he fears.

The simply complete thing, then, is that which is always chosen for itself and never on account of something else.

It is well to be up before daybreak, for such habits contribute to health, wealth, and wisdom.

Even when the laws have been written down, they ought not always remain unchanged.

The eyes of some persons are large, others small, and others of a moderate size; the last-mentioned are the best. And some eyes are projecting, some deep-set, and some moderate, and those which are deep-set have the most acute vision in all animals; the middle position is a sign of the best disposition.

The end of labor is to gain leisure.

In making a speech one must study three points: first, the means of producing persuasion; second, the language; third the proper arrangement of the various parts of the speech.

The soul never thinks without a picture.

We learn an art or craft by doing the things that we shall have to do when we have learnt it.

Nature does nothing in vain.

These virtues are formed in man by his doing the actions ... The good of man is a working of the soul in the way of excellence in a complete life.

Without virtue, man is most unholy and savage, and worst in regard to sex and eating.