Medicine to produce health must examine disease; and music, to create harmony must investigate discord.

Books delight to the very marrow of one's bones. They speak to us, consult with us, and join with us in a living and intense intimacy.

The crowns of kings do not prevent those who wear them from being tormented sometimes by violent headaches.

So long as he was personally present, [Alcibiades] had the perfect mastery of his political adversaries; calumny only succeeded in his absence.

Memory: what wonders it performs in preserving and storing up things gone by - or rather, things that are

And Archimedes, as he was washing, thought of a manner of computing the proportion of gold in King Hiero's crown by seeing the water flowing over the bathing-stool. He leaped up as one possessed or inspired, crying, "I have found it! Eureka!".

If you light upon an impertinent talker, that sticks to you like a bur, to the disappointment of your important occasions, deal freely with him, break off the discourse, and pursue your business.