There are two things children should get from their parents: roots and wings.

In all times it is only individuals that have advanced science, not the age.

What must the English and French think of the language of our philosophers when we Germans do not understand it ourselves?

All theory, dear friend, is gray, but the golden tree of life springs ever green.

I wish the crowd to feel itself well treated, Especially since it lives and lets me live.

As soon as you are in a social setting, you better take away the key to the lock of your heart and pocket it; those who leave thekey in the lock are fools.

I never believed in trying to do anything. Whatever I set out to do I found I had already accomplished.