Many mistakes makes for a very smart person.

Many past mistakes paves the road to future discoveries.

In a climate changed world, it is a smart person who thins their trees so that the abnormally high winds can pass through them without damage.

Never shaft a smart engineer.

It's called publishing. It's how smart people install new ideas into other peoples brains.

An intelligent person is never afraid or ashamed to find errors in his understanding of things.