When there are no clouds in the sky, under the beautiful sunshine, remember the rain and repair your umbrella!

Most man can think no better than a child! This fact perfectly explains why there are so many funny beliefs!

Obedience is the greatest refuge of the weak and the coward people!

Science is a seagull, it knows the sky; it is a squirrel, it knows the forest; it is a mole, it knows the underground; it is a dolphin, it knows the ocean! Science is a multi-talented creature!

Words are never insufficient to describe any situation. It is the talent to use the words which is the insufficient one!

Mankind has one great habit, a bad habit: To create rules on behalf of God! Unless A God appears on the sky and says 'Here are the rules,' do not take any rule serious! Remember that in this universe, there is no port that you can take refuge apart from the reason and the science!

What can a sculptor do without the chisel and the hammer? And what can an impostor politician do without the ignorants and the uneducated?