Memory is the receptacle and sheath of all knowledge

Mathematics is an obscure field, an abstruse science, complicated and exact; yet so many have attained perfection in it that we might conclude almost anyone who seriously applied himself would achieve a measure of success.

If I had more time, I would have written a shorter letter.

In a disordered mind, as in a disordered body, soundness of health is impossible.

There is nothing proper about what you are doing, soldier, but do try to kill me properly.

For while we are enclosed in these confinements of the body, we perform as a kind of duty the heavy task of necessity; for the soul from heaven has been cast down from its dwelling on high and sunk, as it were, into the earth, a place just the opposite to godlike nature and eternity. But I believe that the immortal gods have sown souls in human bodies so there might exist beings to guard the world and after contemplating the order of heaven, might imitate it by their moderation and steadfastness in life.

You will be as much value to others as you have been to yourself.