Science Is Uncertain.

We Need To Teach How Doubt Is Not To Be Feared But Welcomed. It's Ok To Say, "i Don't Know."

Science Is Of Value Because It Can Produce Something.

The Fundamental Principle Of Science, The Definition Almost, Is This: The Sole Test Of The Validity Of Any Idea Is Experiment.

So This Piece Of Dirt Waits Four And A Half Billion Years And Evolves And Changes, And Now A Strange Creature Stands Here With Instruments And Talks To The Strange Creatures In The Audience. What A Wonderful World!

I Don't Know What's The Matter With People: They Don't Learn By Understanding, They Learn By Some Other Way — By Rote Or Something. Their Knowledge Is So Fragile!