Example isn't another way to teach, it is the only way to teach.

The horizon of many people is a circle with a radius of zero. They call this their point of view.

The religion of the future will be cosmic religion. It will transcend personal God and avoid dogma and theology.

You cannot prevent and prepare for war at the same time.

If you can't explain it simply, you don't understand it well enough.

Experience alone can decide on truth.

Concern for man himself and his fate must always form the chief interest of all technical endeavors, concern for the great unsolved problems of the organization of labor and the distribution of goods-in order that the creations of our mind shall be a blessing and not a curse to mankind. Never forget this in the midst of your diagrams and equations.