Sometimes, fear is good. Sometimes it's a good thing to have a little bit of a reality check.

We really think it is a good thing for scientists to spend a little bit of their time either in the community or in schools or helping to train high school teachers.

Politics is a good thing!

Caffeine is a good thing.

A little anger is a good thing if it isn't on your own behalf, if it's for others deserving of your anger, your empathy.

There is no harm in repeating a good thing.