| 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. |