Failure is impossible.
It's kind of fun to do the impossible.
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.
Those who make peaceful revolution impossible will make violent revolution inevitable.
It is an old maxim of mine that when you have excluded the impossible, whatever remains, however improbable, must be the truth.
It is impossible to imagine the universe run by a wise, just and omnipotent God, but it is quite easy to imagine it run by a board of gods.
It is impossible to overlook the extent to which civilization is built upon a renunciation of instinct.
Some of the world's greatest feats were accomplished by people not smart enough to know they were impossible.
It is almost impossible to remember how tragic a place the world is when one is playing golf.
Indeed, man wishes to be happy even when he so lives as to make happiness impossible.
Accomplishing the impossible means only that the boss will add it to your regular duties.
Music expresses that which cannot be said and on which it is impossible to be silent.
Only those who attempt the absurd will achieve the impossible. I think it's in my basement... let me go upstairs and check.
It is impossible to speak in such a way that you cannot be misunderstood.
Teachers are expected to reach unattainable goals with inadequate tools. The miracle is that at times they accomplish this impossible task.
Sometimes I've believed as many as six impossible things before breakfast.