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.

The nucleic acids, as constituents of living organisms, are comparable In importance to proteins. There is evidence that they are Involved In the processes of cell division and growth, that they participate In the transmission of hereditary characters, and that they are important constituents of viruses. An understanding of the molecular structure of the nucleic acids should be of value In the effort to understand the fundamental phenomena of life.

...It would be possible to make much more progress than has been made if the NCI knew its job better, knew how to make discoveries...The NCI really does not know how to make discoveries....So long as the NCI is not willing to follow up ideas that seem good to people who have had experience making discoveries, the work of the NCI is going to be pedestrian.

When an old and distinguished person speaks to you, listen to him carefully and with respect — but do not believe him. Never put your trust into anything but your own intellect. Your elder, no matter whether he has gray hair or has lost his hair, no matter whether he is a Nobel laureate — may be wrong. The world progresses, year by year, century by century, as the members of the younger generation find out what was wrong among the things that their elders said. So you must always be skeptical — always think for yourself.

Science is the search for the truth--it is not a game in which one tries to beat his opponent, to do harm to others. We need to have the spirit of science in international affairs, to make the conduct of international affairs the effort to find the right solution, the just solution of international problems, and not an effort by each nation to get the better of other nations, to do harm to them when it is possible. I believe in morality, in justice, in humanitarianism.

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.

Does the commandment 'Thou Shalt Not Kill' mean nothing to us? Are we to interpret it as meaning 'Thou shalt not kill except on the grand scale,' or 'Thou shalt not kill except when the national leaders say to do so'?