| Knowledge comes, but wisdom lingers. |
| To not say all that can be said is the secret of discipline and economy. |
| Unless you try to do something beyond what you have already mastered, you will never grow. |
| Whoever submits himself to a super-discipline can expect great triumphs. |
| It is sometimes easier to be happy if you don't know everything. |
| 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. |