I shall assume that your silence gives consent.

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

If in a discussion of many matters ... we are not able to give perfectly exact and self-consistent accounts, do not be surprised: rather we would be content if we provide accounts that are second to none in probability.

The point which I should first wish to understand is whether the pious or holy is beloved by the gods because it is holy, or holy because it is beloved of the gods.

Mathematics is like draughts in being suitable for the young, not too difficult, amusing, and without peril to the state.

All men, well interrogated, answer well.

Astronomy compels the soul to look upwards and leads us from this world to another.