He just never lost his optimism or sense of humor.

One time we were on a cruise and the weather was horrible - the ship was going up and down. Don had the time of his life, yelling for joy as he let his chair careen down the hallways, bouncing up and down. Everyone else was throwing up.

He wasn't the slapstick guy you saw in the movies. He was very demanding and serious. Don always said how much he learned from him.

It's snowing still," said Eeyore gloomily.
"So it is."
"And freezing."
"Is it?"
"Yes," said Eeyore. "However," he said, brightening up a little, "we haven't had an earthquake lately.

You catch more flies with honey than you do with vinegar.

A pessimist is a man who thinks everybody is as nasty as himself, and hates them for it.