There are all kinds of interesting questions that come from a knowledge of science, which only adds to the excitement and mystery and awe of a flower.

[B]eyond poverty, beyond the point that the material needs are reasonably satisfied, only from within is peace.

Scientific knowledge is an enabling power to do either good or bad — but it does not carry instructions on how to use it.

If the professors of English will complain to me that the students who come to the universities, after all those years of study, still cannot spell 'friend,' I say to them that something's the matter with the way you spell friend.

The real problem in speech is not precise language. The problem is clear language.

Maybe that is why young people make success. They don't know enough.

It is simple, therefore it is beautiful