No one does anything right in life, until they realize that they are making a mistake

Desire for approval and recognition is a healthy motive, but the desire to be acknowledged as better, stronger, or more intelligent than a fellow being or fellow scholar easily leads to an excessively egoistic psychological adjustment, which may become injurious for the individual and for the community.

The war is won, but the peace is not.

Berlin is the place to which I am most closely bound by human and scientific ties.

I have firmly decided to bite the dust with a minimum of medical assistance when my time comes, and up to then to sin to my wicked heart's content.

I must seem like an ostrich who forever burries its head in the relativistic sands in order not to face the evil quanta.

Mere praise of peace is easy and ineffective. What is needed is acitve participation in the fight against war and everything which leads to it.