All beauty that surrounds us must one day perish.

Philosophy is the opposite of fairy tales

Athens is like a sluggish horse, and I am the gadfly trying to sting it into life.

Health is the natural condition. When sickness occurs, it is a sign that Nature has gone off course because of a physical or mental imbalance. The road to health for everyone is through moderation, harmony, and a 'sound mind in a sound body'.

When we sense something, it is due to the movement of atoms in space. When I see the moon it is because "moon atoms" penetrate my eye.

...long before the child learns to talk properly-and long before it learns to think philosophically-the world will have become a habit. A pity, if you ask me.

Life is both sad and solemn. We are led into a wonderful world, we meet one another here, greet each other---and wander together for a brief moment. Then we lose each other and disappear as suddenly and unreasonably as we arrived.