One may say the eternal mystery of the world is its comprehensibility.

The greatest activity of which man is capable: Opening up yet another fragment of the frontier of beauty.

... one does people the best service by giving them some elevating work to do and thus indirectly elevating them.

Those who believe that politics and religion do not mix, understand neither.

In the middle of difficulties lie opportunities.

Engineering is not only study of 45 subjects but it is moral studies of intellectual life. Make things as simple as possible..but not simpler.

I think and think for months and years. Ninety-nine times, the conclusion is false. The hundredth time I am right.