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- Although the whole of this life were said to be nothing but a dream and the physical world nothing but a phantasm, I should call this dream or phatasm real enough, if, using reason well, we were never deceived by it.
- Baron Gottfried Wilhelm von Leibniz
- Nature gets credit which should in truth be reserved for ourselves: the rose for its scent, the nightingale for its song; and the sun for its radiance. The poets are entirely mistaken. They should address their lyrics to themselves and should turn them into odes of self congratulation on the excellence of the human mind.
- Alfred North Whitehead (1861 - 1947)
- What happens depends on our way of observing it or on the fact that we observe it.
- Werner Heisenberg
- We have to remember that what we observe is not nature in itself but nature exposed to our method of questioning.
- Werner Heisenberg
- A reasonable probability is the only certainty.
- E.W. Howe
- Everybody's got plans...until they get hit.
- Mike Tyson, heavyweight champ, on "plans" released by Tyrell Biggs' camp on how they would defeat the champ
- Thus, be it understood, to demonstrate a theorem, it is neither necessary nor even advantageous to know what it means....[A] machine might be imagined where the assumptions were put in at one end, while the theorems came out at the other, like the legendary Chicago machine where the pigs go in alive and come out transformed into hams and sausages. No more than these machines need the mathematician know what he does.
- Henri Poincare (1854 - 1912)
- The most merciful thing in the world . . . is the inability of the human mind to correlate all its contents.
- H.P. Lovecraft
- Adjectives are the potbelly of poetry.
- R.Z. Sheppard, book critic
- It is with words as with sunbeams. The more they are condenced, the deeper they burn.
- Robert Southey (1774 - 1843)
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