[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.

Nothing is more irredeemably irrelevant than bad science.

The eye searches for shapes. It searches for a beginning, a middle, and an end.

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.

Human dignity is better served by embracing knowledge.

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.

Science never gives up searching for truth, since it never claims to have achieved it.