There is probably no pleasure equal to the pleasure of climbing a dangerous Alp; but it is a pleasure which is confined strictly to people who can find pleasure in it.
Creating a new theory is not like destroying an old barn and erecting a skyscraper in its place. It is rather like climbing a mountain and gaining new and wider views.
We seldom break a leg as long as we are climbing wearily upwards in our lives, instead we do it when we start going easy on ourselves and choosing the comfortable paths.
To put yourself into a situation where a mistake cannot necessarily be recouped, where the life you lose may be your own, clears the head wonderfully. It puts domestic problems back into proportion and adds an element of seriousness to your drab, routine life. Perhaps this is one reason why climbing has become increasingly hard as society has become increasingly, disproportionately, coddling.