Be just to everyone and don't look for an honour greater than this!

I'm saying that the leaders of the church have locked the sacred cow called science in the stable and they won't let anybody enter; they should open it immediately so that we can milk that cow in the name of humanity and thus find the truth.

You can be a German, you can be a Greek or a Spanish or a Japanese etc, but your true nation is the whole humanity!

Courage makes the things easier!

You cannot do anything good for a dead man! Whatever goodness you want to do for him, do it when he is alive!

Birds needs trees and mankind needs both of them! Protecting the nature and environment is not only a matter of ethics but also a matter of existence.

If your mind is tired, go get work in the fields!