It is difficult to say what truth is, but sometimes it is so easy to recognize a falsehood.

Concern for man and his fate must always form the chief interest of all technical endeavors. Never forget this in the midst of your diagrams and equations.

All that's different about me is that I still ask the questions most people stopped asking at age five.

Politics is for the present, but an equation is for eternity.

The health of society thus depends quite as much on the independence of the individuals composing it as on their close political cohesion.

Scientists believe that every occurrence, including the affairs of human beings, is due to the laws of nature. Therefore a scientist cannot be inclined to believe that the course of events can be influenced by prayer, that is, by a supernaturally manifested wish.

No problem is ever solved in the same consciousness thas was used to create it.