Tackling deprivation around the world is a moral imperative and firmly in Britain's national interest.

- Andrew Mitchell

The imperative is to define what is right and do it.

- Barbara Jordan

Of course, it's imperative that we stabilize Iraq and quickly reduce our armed role there.

- David Hackworth

It's not imperative that I graduate in four years, and it's not imperative that I get all A's.

- Kellie Martin