Reinforcement Quotes (2 quotes)
On principle no European traveler, especially the natural scientist, should travel otherwise than in the company of a native. This is essential, especially in view of his inability to make himself understood, to threaten to summon reinforcements when molested, or to recover forgotten pieces of clothing.
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!