Moving forward is not always good, especially when there is a precipice ahead! Know to turn back! Know to step back! Sometimes moving backwards is moving forward!

All the sands of the world even when they unite together cannot create the hardness of a single rock!

There must be a marsh in the brains of these men or there would not be so many frogs of wrong ideas gathered in their heads.

Child! Turn your face to the light, to the science, to the reason, to the truth, to the peace! Child! Be modern, be compassionate, be individual, and be independent! Child! Don't be the man of anyone or any system, don't believe in any religious stories, and don't ever be silent against any oppressor! Child, turn your face to the light and walk towards the light!

You cannot disgrace a disgraceful man; you cannot make a shameless man feel ashamed; you cannot make a cockroach a cockroach, because it is already a cockroach!

Stick to life, just like a baby sticking to a candy!

A person who loves and kisses a tree is a normal person; a person who hates and cuts a tree is an abnormal person.