Nothing is more irredeemably irrelevant than bad science.

The applause is a celebration not only of the actors but also of the audience. It constitutes a shared moment of delight.

I knew, however, that it would cost ten times what I had available in order to build a molecular beam machine. I decided to follow a byway, rather than the highway. It is a procedure I have subsequently recommended to beginning scientists in this country, where research strategy is best modelled on that used by Wolfe at the Plains of Abraham.

[Intellectual courage is] the quality that allows one to believe in one's judgement in the face of disappointment and widespread skepticism. Intellectual courage is even rarer than physical courage.

For science must breathe the oxygen of freedom.

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

Science is a collection of stories, linking characters worthy of notice.