Everything is theoretically impossible, until it is done.

It always seems impossible until it's done.

One could write a history of science in reverse by assembling the solemn pronouncements of highest authority about what could not be done and could never happen.

I am free because I know that I alone am morally responsible for everything I do. I am free, no matter what rules surround me. If I find them tolerable, I tolerate them; if I find them too obnoxious, I break them. I am free because I know that I alone am morally responsible for everything I do.

That sounds impossible," said the hatter. "We absolutely must give it a try!

May you live as long as you wish and love as long as you live.