Pardon that this is strictly speaking not a question about physics but about a quote about physics, but I'm not sure where else to turn to.
A while back I read a quote by Feynman in which he says something to the effect that the more different ways one can solve a physics problem the more deeply one understands it.
Unfortunately, I don't remember where I read this. I spent significant amount of time googling as well as looking through my Feynman lectures but could not locate it.
Does anyone know where to find the quote?