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... what is limited is not limited in relation to
anything.
Aristotle - Physics, Book III |
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Wheeler's first moral principle:
"Never make a calculation until you know the answer".
Make an estimate before every calculation,
try a simple physical argument
(symmetry! invariance! conservation!)
before every derivation,
guess the answer to every paradox and puzzle.
Courage:
No one else needs to know what the guess is.
Therefore make it quickly, by instinct.
A right guess reinforces this instinct.
A wrong guess brings the refreshment of surprise.
In either case life as a spacetime expert,
however long,
is more fun!
Second edition, p.20 |