Do not seek fame. Do not make plans. Do not be absorbed by activities. Do not think that you know. Be aware of all that is and dwell in the infinite. Wander where there is no path. Be all that heaven gave you, but act as though you have received nothing. Be empty, that is all.
Our life has a boundary but there is no boundary to knowledge. To use what has a boundary to pursue what is limitless is dangerous; with this knowledge, if we still go after knowledge, we will run into trouble. Do not do what is good in order to gain praise. If you do what is bad be sure to avoid the punishment. Follow the Middle Course, for this is the way to keep yourself together, to sustain your life, to care for your parents and to live for many years.
Chuang Tzu (c.360 BC - c. 275 BC)
Source: The Book of Chuang Tzu - translated by Martin Palmer and Elizabeth Breuilly