We speak erroneously of "artificial" materials, "synthetics", and so forth. The basis for this erroneous terminology is the notion that Nature has made certain things which we call natural, and everything else is "man-made", ergo artificial. But what one learns in chemistry is that Nature wrote all the rules of structuring; man does not invent chemical structuring rules; he only discovers the rules. All the chemist can do is find out what Nature permits, and any substances that are thus developed or discovered are inherently natural. It is very important to remember that.

It is the integrity of each individual human that is in final examination. On personal integrity hangs humanity's fate.

One can study a caterpillar forever and never be able to predict a butterfly.

Out of my general world-pattern-trend studies there now comes strong evidence that nothing is going to be quite so surprising and abrupt in the future history of man as the forward evolution in the educational process.

Ideas are easy to come by; reduction to practice is an arduous but inspirationally rewarding matter.

I'm not trying to counsel any of you to do anything really special except dare to think. And to dare to go with the truth. And to dare to really love completely.

You never change things by fighting the existing reality. To change something, build a new model that makes the existing model obsolete.