Listen widely to remove your doubts and be careful when speaking about the rest and your mistakes will be few. See much and get rid of what is dangerous and be careful in acting on the rest and your causes for regret will be few. Speaking without fault, acting without causing regret: 'upgrading' consists in this.
ConfuciusWith coarse rice to eat, with water to drink, and my bent arm for a pillow - I have still joy in the midst of all these things.
ConfuciusThe silent treasuring up of knowledge; learning without satiety; and instructing others without being wearied: which one of these things belongs to me?
Confucius