The way to have a good idea is to have a lot of ideas.

I think that the formation of [DNA's] structure by Watson and Crick may turn out to be the greatest developments in the field of molecular genetics in recent years.

You have to have a lot of ideas. First, if you want to make discoveries, it's a good thing to have good ideas. And second, you have to have a sort of sixth sense-the result of judgment and experience-which ideas are worth following up. I seem to have the first thing, a lot of ideas, and I also seem to have good judgment as to which are the bad ideas that I should just ignore, and the good ones, that I'd better follow up.

But I know also that still more interesting discoveries will be made that I have not the imagination to describe - and I am awaiting them, full of curiosity and enthusiasm.