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!
Happiness is often somewhere near us, not in the far places!
Listen to the praises about you in silence; listen to the critics about you even in more silence!
Anything easy teaches you nothing! To learn something, have some difficulties!
The Sun and the science are the same; when they set down, the darkness comes!
If an illusion makes a man happy, destroy that illusion! Because happiness must come via the truth!