All the fun is locking horns with impossibilities.

He started to sing as he tackled the thing That couldn't be done, and he did it.

All things are possible once enough human beings realize that everything is at stake.

If a thing can be done, why do it?

Achieving the impossible means only that the boss will add it to your regular duties.

The world is moving so fast these days that the man who says it can't be done is generally interrupted by someone doing it.

Never tell a young person that something cannot be done. God may have been waiting for centuries for somebody ignorant enough of the impossible to do that thing.

It is necessary; therefore it is possible.

The Difficult is that which can be done today. The Impossible is that which takes a little longer.

I believe because it is impossible.

If someone says 'can't', that shows you what to do.

It's kind of fun to do the impossible.