The human race will have no respite from evils until those who are really philosophers acquire political power or until, through some divine dispensation, those who rule and have political authority in the cities become real philosophers.

I do not live to play, but I play in order that I may live, and return with greater zest to the labors of life.

You cannot conceive the many without the one.

The man who hath music in his soul will be most in love with the loveliest.

If there is a good and wise God, then there also exists a progress of humanity toward perfection.

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.

There is no such thing as a lovers' oath.