Nothing in nature is exhausted in its first use...In God, every end is converted into a new means.

Yet these uneasy pleasures and fine pains are for curiosity, and not for life.

The borrowing is often honest enough, and comes of magnanimity and stoutness. A great man quotes bravely and will not draw on his invention when his memory serves him with a word as good.

Guard well your spare moments. They are like uncut diamonds. Discard them and their value will never be known. Improve them and they will become the brightest gems in a useful life.

I do then with my friends as I do with my books. I would have them where I can find them, but I seldom use them.

Science finds it methods.

All the devils respect virtue.