A man who preserves his integrity no real, long-lasting harm can ever come.

...[W]hen death comes to a man, the mortal part of him dies, but the immortal part retires at the approach of death and escapes unharmed and indestructible... [I]t is as certain as anything can be... that soul is immortal and imperishable, and that our souls will really exist in the next world.

There is one way, then, in which a man can be free from all anxiety about the fate of his soul - if in life he has abandoned bodily pleasures and adornments, as foreign to his purpose and likely to do more harm than good, and has devoted himself to the pleasures of acquiring knowledge, and so by decking his soul not with a borrowed beauty but with its own - with self-control, and goodness, and courage, and liberality, and truth - has fitted himself to await his journey in the next world.

Virtue is the beauty of the soul.

The body cannot be cured without regard for the soul.

A free soul ought not to pursue any study slavishly, for nothing that is learned under compulsion stays with the mind.

The soul then, as being immortal, and having been born again many times, and having seen all things that exist, whether in this world or in the world below, has knowledge of them all . . . all enquiry and all learning is but recollection.