If I have a thousand ideas and only one turns out to be good, I am satisfied.

Second to agriculture, humbug is the biggest industry of our age.

The savants will write excellent volumes. There will be laureates. But wars will continue just the same until the forces of the circumstances render them impossible.

I have not the slightest pretension to call my verses poetry; I write now and then for no other purpose than to relieve depression or to improve my English.

To his sister-in-law: What a contrast between us! You live a warm and glowing life, surrounded by loved ones whom you care for and who care for you; you are anchored in contentment. I drift about without rudder or compass, a wreck on the sea of life; I have no memories to cheer me, no pleasant illusions of the future to comfort me, or about me to satisfy my vanity. I have no family to furnish the only kind of survival that concerns us, no friends for the wholesome development of my affections, or enemies for my malice.

The truthful man is usually a liar.

Kant's style is so heavy that after his pure reason, the reader longs for unreasonableness.