This reply seems very witty until you realise that there are actual people whose job it is to act in a circus. In the real world, a job is mainly being told to do things that you don't really want to do, but deciding to do them anyway because you're getting paid.
Why? It is a simple fact that people only go to work because they get paid. You can verify this for yourself by seeing how many people continue to work for a company after it has stopped paying them.
Huh. The folks I know who work in circus are extremely creative, driven people, who often scrape by for years between gigs that pay decently. They're definitely not really in it for the money, though they do need to eat, and definitely aren't just taking orders. The ring leader is just another role...
And as for the bear, it doesn't get paid at all...