G.K. Chesterton

I got a book called Platitudes Undone. It's kind of weird. It is a series of mostly Nietzschean and mostly forgettable proverbs by Holbrook Jackson, with penciled in comments by G.K. Chesterton. The fun, of course, is reading the comments. Here are a few I liked, with Chesterton in italics:

Definitions put a limit to ideas...
Definitions are ideas. A snake's head and tail don't "limit" the snake. They make him.

Beware of those who agree with you.
True: but don't alter your opinion to annoy them.

Doubt is the prerogative of the intellect...
The mind exists not to doubt but to decide.

The future will look upon man as we look upon the ichthyosaurus - an extinct monster.
The "future" won't look upon anything. No eyes.