To understand is hard. Once one understands, action is easy.

You do not really understand something unless you can explain it to your grandmother.

I shall light a candle of understanding in thine heart, which shall not be put out.

If you truly want to understand something, try to change it.

Calling George Bush shallow is like calling a dwarf short.

It is difficult to get a man to understand something when his salary depends upon his not understanding it.

Anger and intolerance are the twin enemies of correct understanding.

The stupid don't even understand something that happened long ago, the wise understand it before it develops.

You never know where you're going to find the same thoughts in another brain, but when it happens you know it right off, just like you were connected by a small electrical wire that suddenly glows red hot and sparks.

A moment's insight is sometimes worth a life's experience.