Our science has become terrible, our research dangerous, our findings deadly. We physicists have to make peace with reality. Reality is not as strong as we are. We will ruin reality.

What the world needs is not redemption from sin but redemption from hunger and oppression; it has no need to pin its hopes upon Heaven, it has everything to hope for from this earth.

In this country, you never pull the emergency brake, even when there is an emergency. It is imperative that the trains run on schedule.

Rome has betrayed itself. It knew the truth and chose violence, it knew humaneness and it chose tyranny.

Revolutions demand enormous sacrifices and, at the same time, create a new need to change the world again.

The problems of all of humanity can only be solved by all of humanity

Nothing that has been thought can ever be taken back