Eyes and ears are poor witnesses to people if they have uncultured souls.
How can you hide from what never goes away?
Even what those with the greatest reputation for knowing it all claim to understand and defend are but opinions.
Man is most nearly himself when he achieves the seriousness of a child at play.
Men who are lovers of wisdom [i.e., philosophers] must be inquirers into many things.
All is flux, nothing is stationary.