Both poverty and wealth, therefore, have a bad effect on the quality of the work and the workman himself. Wealth and poverty, I answered. One produces luxury and idleness and a passion for novelty, the other meanness and bad workmanship and revolution into the bargain.

To be at once exceedingly wealthy and good is impossible.

For it is obvious to everybody, I think, that this study [of astronomy] compels the soul to look upward and leads it away from things here to higher things.

The god is the beautiful.

To be conquered by yourself is of all things most shameful and vile.

Let no one destitute of geometry enter my doors.

Watch a man at play for an hour and you can learn more about him than in talking to him for a year.