[smt88]

It's just not true.

Lots of scientists are passionate about discovery. The lack of knowledge in a certain field doesn't always make them angry. It makes them curious. It makes them feel like they're living in the past.

Ego often makes people passionate. They have a drive to fill a void where self esteem should be. I've seen this many times in business. This doesn't always indicate anger -- it can be anxiety or insecurity instead.

I can probably come up with other examples, but you get my point.