Ideas can be life-changing. Sometimes all you need to open the door is just one more good idea.

Sex in space is not just a good idea, it's survival.

I'm no interior decorator, but just I have a feeling that plastic plants in the bathroom... probably not a good idea.

Painting is something that requires a lot of time - it's not just one good idea out of art school.

When you have a good idea, the money flows.

It's just not a good idea to drink and drive; that is just common sense. But common sense is not that common!