Judging from the scientists I know, including Eva and Ruth, and those whom I've read about, you can't pursue the laws of nature very long without bumping into beauty. “I don't know if it's the same beauty you see in the sunset,” a friend tells me, “but it feels the same.” This friend is a physicist, who has spent a long career deciphering what must be happening in the interior of stars. He recalls for me this thrill on grasping for the first time Dirac's⑴ equations describing quantum mechanics, or those of Einstein describing relativity. “They're so beautiful,” he says, “you can see immediately they have to be true. Or at least on the way toward truth.” I ask him what makes a theory beautiful, and he replies, “Simplicity, symmetry, elegance, and power.”
我结识一些科学家(包括伊娃和露丝),也拜读过不少科学家的著作,从中我作出推断:人们在探求自然规律的旅途中,须臾便会与美不期而遇。一个朋友对我说:“我不敢肯定这种美是否与日落之美异曲同工,但至少,两者带给我的感受别无二致。” 我的这个朋友是一位物理学家,他大半辈子都在致力于破解群星内部的秘密。他向我讲述了当年邂逅科学之美时的狂喜:那是当他生平第一次顿悟狄拉克的量子力学方程式,或是洞彻爱因斯坦相对论的方程式时的感受。“那些方程式是如此动人,”他说道,“只消看一眼你就会明白,它们一定是正确的,或者说---至少,它们的指向是正确的。” 我好奇一个“动人的”理论是个什么样,他的回答是:“简约、和谐、典雅,有力。”
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