An ordinary mistake is one that leads to a dead end, while a profound mistake is one that leads to progress. Anyone can make an ordinary mistake, but it takes a genius to make a profound mistake.
The Lightness of Being - Mass, Ether and the Unification of Forces, Basic Books 2008, chapter 1, p. 12
Knowing how to calculate something is not the same as understanding it. Having a computer to calculate the origin of mass for us may be convincing, but is not satisfying. Fortunately we can understand it too.Frank Wilczek
Quite undeservedly, the ether has acquired a bad name.Frank Wilczek
The answer to the ancient question "Why is there something rather than nothing?" would then be that ‘nothing’ is unstable.Frank Wilczek