Science exists, moreover, only as a journey toward troth. Stifle dissent and you end that journey.

For science must breathe the oxygen of freedom.

Young people ask me if this country is serious about science. They aren't thinking about the passport that they will hold, but the country that they must rely on for support and encouragement.

Discoveries that are anticipated are seldom the most valuable. ... It's the scientist free to pilot his vessel across hidden shoals into open seas who gives the best value.

Even in the world of molecules the civilising influence of modest restraints is a cause for rejoicing.

The respect for human rights, essential if we are to use technology wisely, is not something alien that must be grafted onto science. On the contrary, it is integral to science, as also to scholarship in general.

Reality is no less precious if it presents itself to someone else. All are discoverers, and if we disenfranchise any, all suffer.