All things will be produced in superior quantity and quality, and with greater ease, when each man works at a single occupation, in accordance with his natural gifts, and at the right moment, without meddling with anything else.

Plato

Plato

Profession: Philosopher
Nationality: Greek

Some suggestions for you :

For this," he said, "is the great error of our day in the treatment of the human body, that physicians separate the soul from the body.

Let the speaker speak truly and the judge decide justly.

We are twice armed if we fight with faith.

From all these, then, they will be finally free, and they will live a happier life than that men count most happy, the life of victors at Olympia.

This City is what it is because our citizens are what they are.

Hope,' he says, 'cherishes the soul of him who lives in justice and holiness, and is the nurse of his age and the companion of his journey;—hope which is mightiest to sway the restless soul of man.

For what lover would not choose rather to be seen by all mankind than by his beloved, either when abandoning his post or throwing away his arms? He would be ready to die a thousand deaths rather than endure this.

Every heart sings a song, incomplete, until another heart whispers back.

They deem him their worst enemy who tells them the truth.

Every king springs from a race of slaves, and every slave had kings among his ancestors.

The man who has no self-respect, on the contrary, will imitate anybody and anything; sounds of nature and cries of animals alike; his whole performance will be imitation of gesture and voice.

A dog has the soul of a philosopher.

The direction in which education starts a man will determine his future life.

All good and evil, whether in the body or in human nature, originates in the soul, and overflows from thence, as if from the head into the eyes.