Assuming Quote by Donald M. Nelson

Nothing is ever done until everyone is convinced that it ought to be done, and has been convinced for so long that it is…

— Francis Cornford

It would be unsound fancy and self-contradictory to expect that things which have never yet been done can be done except by means which…

— Francis Bacon

Nothing was ever accomplished by anyone who said 'It can't be done.'

— Eleanor Roosevelt

All that is impossible remains to be accomplished.

— Jules Verne

Nothing has ever been achieved by the person who says, ‘It can’t be done.’

— Eleanor Roosevelt

We always assume that what we do is the way it should be done - that's not always the case.

— Oliver Luck

What is not yet done is only what we have not yet attempted to do.

— Alexis de Tocqueville

We are not here to do what has already been done.

— Anonymous

It's never been done doesn't mean it can't be done.

— Kathy Ireland

Many more things would be accomplished if we didn't consider them impossible.

— Vince Lombardi

If we are to achieve things never before accomplished we must employ methods never before attempted

— Francis Bacon

We must do what we think we can't do.

— Eleanor Roosevelt