I know that I am intelligent, because I know that I know nothing.

If you want a love message to be heard, it has got to be sent out. To keep a lamp burning, we have to keep putting oil in it.

Man is the only creature that refuses to be what he is.

Let us permit nature to have her way. She understands her business better than we do.

One man's ways may be as good as another's, but we all like our own best.