The impossible often has a kind of integrity which the merely improbable lacks.
The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair.
It is impossible to underrate human intelligence - beginning with one's own.
To accuse is so easy that it is infamous to do so where proof is impossible.
It's fun to do things that people don't think are possible or likely.
It is impossible to place all the world and one's father.
It is practically impossible for a top management man, or even middle management, to be doing the degree and level of work that he should be doing and, at the same time, have a clean desk.
Everything is always impossible before it works. That is what entrepreneurs are all about - doing what people have told them is impossible.
Sincerity is impossible unless it pervades the whole being, and the pretense of it saps the very foundation of character.
It is not impossibilities which fill us with deepest despair, but possibilities which we have failed to realize.
Television has made dictatorship impossible, but democracy unbearable.
The Difficult is that which can be done immediately; the Impossible that which takes a little longer.
Leadership is the process of achieving a dream together, especially when that dream seems impossible to achieve.