Reinforcement is being right.

Properly used, positive reinforcement is extremely powerful.

The way positive reinforcement is carried out is more important than the amount.

The feeling of being interested can act as a kind of neurological signal, directing us to fruitful areas of inquiry.

I remember when I was a freshman in college, I was still somewhat bothered by... worried... about religion. I remember going to this professor of philosophy and telling him that I had lost my faith.

I'm very pessimistic.