The unexamined life is not worth living.
It is the mark of an educated mind to be able to entertain a thought without accepting it.
The only true wisdom is in knowing you know nothing.
Friendship is a single soul dwelling in two bodies.
Man is the measure of all things.
The educated differ from the uneducated as much as the living from the dead.
At his best, man is the noblest of all animals; separated from law and justice he is the worst.
Beware the barrenness of a busy life.
Love is composed of a single soul inhabiting two bodies.
We are what we repeatedly do. Excellence, then, is not an act, but a habit.
The roots of education are bitter, but the fruit is sweet.
The gift of truth excels all other gifts.
What you leave behind is not what is engraved in stone monuments, but what is woven into the lives of others.
Do not spoil what you have by desiring what you have not; remember that what you now have was once among the things you only hoped for.
I don't need a friend who changes when I change and who nods when I nod; my shadow does that much better.
Knowing yourself is the beginning of all wisdom.
Wealth consists not in having great possessions, but in having few wants.
...for the object of education is to teach us to love beauty.
Death does not concern us, because as long as we exist, death is not here. And when it does come, we no longer exist.
Nothing exists except atoms and empty space; everything else is opinion.