Attempt the impossible in order to improve you work.
     - Bette Davis, 1908 - 1989The Wright brothers flew right through the smoke screen of impossibility.
     - Charles F. Kettering, 1876 - 1958Some of the world's greatest feats were accomplished by people not smart enough to know they were impossible.
     - Doug LarsonThe 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 or repair.
     - Douglas Noel Adams, 1952 - 2001When [a politician] is in opposition, he is an expert on the means to some end; and when he is in office he is an expert on the obstacles to it. In short, when he is impotent he proves to us that the thing is easy; and when he is omnipotent he proves that it is impossible.
     - Gilbert Keith Chesterton, 1874 - 1936It is not a lucky word, this "impossible"; no good comes of those who have it so often in their mouth.
     - Thomas Carlyle, 1795 - 1881
A likely impossibility is always preferable to an unconvincing possibility.
     - AristotleAll things are possible until they are proved impossible. And even the impossible may only be so, as of now.
     - Pearl S. BuckFaith sees the invisible, feels the intangible, and achieves the impossible.
     - AnonymousMan can believe the impossible, but can never believe the improbable.
     - Oscar WildeMost of the things worth doing in the world had been declared impossible before they were done.
     - Louis D. BrandeisThe impossible often has a kind of integrity to it which the merely improbable lacks.
     - Douglas AdamsThe limits of the possible can only be defined by going beyond them into the impossible.
     - Clarke's Second LawThe young do not know enough to be prudent, and therefore they attempt the impossible - and achieve it, generation after generation.
     - Pearl S. BuckWhat we need is more people who specialize in the impossible.
     - Theodore RoethkeWhen a distinguished but elderly scientist states that something is possible, he is almost certainly right. When he states that something is impossible, he is very probably wrong.
     - Clarke's First LawWho so loves believes the impossible.
     - Elizabeth Barrett Browning