He who knows, does not speak. He who speaks, does not know.

The most pathetic person in the world is someone who has sight but no vision.

Our work is the presentation of our capabilities.

God has not preserved the scientist from error, nor safeguarded science from shortcomings.

I've always tried to be honest with my audience.

All the strength and succor you want is within yourselves. Therefore, make your own future.

There is no great genius without some touch of madness.