History is just littered with problems that were solved that were supposed to be impossible.

— Paul Wolfowitz

However, far modern science and techniques have fallen short of their inherent possibilities, they have taught mankind at least one lesson; nothing is impossible.

— Lewis Mumford

How often have I said to you that when you have eliminated the impossible, whatever remains, however improbable, must be the truth?

— Arthur Conan Doyle

I believe that it is impossible to stop people from using the fossil fuels, so we need to develop technologies which allow us to use them without creating environmental havoc on the planet.

— Klaus Lackner

I believe things cannot make themselves impossible.

— Stephen Hawking

I can't be casual about losing. I always think I have a chance to win until winning is absolutely impossible.

— Arnold Palmer

I do wish I could tell you my age, but it's impossible. It keeps changing all the time.

— Greer Garson

If an elderly but distinguished scientist says that something is possible, he is almost certainly right; but if he says that it is impossible, he is very probably wrong.

— Arthur C. Clarke

If anyone tells you it's impossible to be fabulous and smart and make a ton of money using math, well, they can just get in line behind you - and kiss your math.

— Danica McKellar

I feel like a tiger right now. There's nothing impossible if you get up and work for it.

— Michael Flatley