Der Fortschritt der Wissenschaft besteht in der Erweiterung des Gebietes der Erfahrung.
The progress of science consists in the expansion of the field of experience.
No individual has any right to come into the world and go out of it without leaving behind him distinct and legitimate reasons for having passed through it.
I don’t think I’ve ever been bored in my life. There’s always something to think about.