If you are a student, try to be a teacher; if you are a teacher, try to be a student!

Poverty is a mathematical proof of the fact that mankind is a big failure!

Carry your bag by yourself; carry your umbrella by yourself; open your door by yourself; light your own candle! Do your job by yourself! Don't use others! Don't behave like a king, don't behave like a queen! Be humble!

Revolution is an awakening, so is the spring! Spring is an awakening, so is the revolution!

Man is flawed; universe is imperfect; the functioning of the cosmos is defective! Everything seems to be severely punished by the imperfection! May be the real challenge of men is to correct all these flaws! It is possible to think that God is an evolutionary perfectionist! He creates things as unimportant and faulty; then let them all alone and fateless to evolve to perfection!

Do not underrate others, do not underrate yourself, and do not underrate anything! Do not overrate others, do not overrate yourself, and do not overrate anything!

The enemy of a tree is not only the enemy of humanity, but also the enemy of all the living beings!