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.

Too much attention to health is a hindrance to learning, to invention, and to studies of any kind, for we are always feeling suspicious shootings and swimmings in our heads, and we are prone to blame studies from them.

To escape from evil we must be made as far as possible like God; and the resemblance consists in becoming just and holy and wise.

The flute is not an instrument that has a good moral effect - it is too exciting.

Everything changes and nothing remains still.

No one is a friend to his friend who does not love in return.

Pepper is small in quantity and great in virtue.