Those who have nothing have only their discipline.
The possession of knowledge does not kill the sense of wonder and mystery. There is always more mystery.
Good habits are worth being fanatical about.
All knowledge hurts.
The most powerful control we can ever attain, is to be in control of ourselves.
The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge.
True discipline is really just self-remembering; no forcing or fighting is necessary.
Confidence is ignorance. If you're feeling cocky, it's because there's something you don't know.
One painful duty fulfilled makes the next plainer and easier.
The man of knowledge must be able not only to love his enemies but also to hate his friends.
