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.

To test whether you have learned an idea or a definition, rephrase what you just learned without using the new word.

I think it's much more interesting to live not knowing than to have answers which might be wrong.

Start out understanding religion by saying everything is possibly wrong... As soon as you do that, you start sliding down an edge which is hard to recover from.

It is important to realize that in physics today, we have no knowledge of what energy is

Strange! I don't understand how it is that we can write mathematical expressions and calculate what the thing is going to do without being able to picture it.

What do I advise? Forget it all. Don't be afraid. Do what you get the most pleasure from. Is it to build a cloud chamber? Then go on doing things like that. Develop your talents wherever they may lead. Damn the torpedoes - full speed ahead!If you have any talent,or any occupation that delights you,do it, and do it to the hilt