How to use "brilliant" in a sentence

Sentences

He was the most brilliant man I have ever known in the insurance profession

A ring of brilliant, pulsing flame was visible in there, and it bathed his face in an eerie blue light.

It's a brilliant act

In the chopper's brilliant floodlights, there was little to see but driving snow

The description of my own character is brilliant

So simple! So brilliant! So interesting!