“Monkey can make a long jump with his muscles; and man, with his wisdom!”

“We see the man when we look at the monkey; we see the monkey when we look at the man!”

“One of the most tragicomic things in life is that when a man makes an imaginary thing – such as a religion – as his own flag and carries it all his life and even dies for it! An intelligent man has only one flag: Flag of reason and science!”

“Mystery keeps man alive; it opens his ears, his eyes, and his mind! Find a mystery and try to solve it!”

“The biggest challenge for a man is to attain the wisdom of 80 years of age in youth!”

“The wisdom of the Moon is greater than the wisdom of the Earth, because the Moon sees the universe closer than the Earth can see it!”

“Man is full of energy; it is up to him how to use it! You can use your energy to do harm to people or to produce art and science; or you can use it for chattering or for deceiving people! By looking at the human history, we can easily say that man is guilty of wasting his energy mostly for stupid things!”