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.

If I had known they were going to do this, I would have become a shoemaker.

There exists a passion for comprehension, just as there exists a passion for music. That passion is rather common in children, but gets lost in most people later on. Without this passion there would be neither mathematics nor natural science.

The first and most important necessity is the creation of a modus vivendi with the Arab people.

when u knw ur limits u go byond them

The time comes in life when we have read enough. It's time to stop reading. It's time to lay down the books and write.

I no longer believed in the known God of the Bible, but rather in the mysterious God expressed in nature.