Though we explore in a culturally-conditioned way, the reality we sketch is universal.

[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.

Idealism is the highest form of reason.

Today, Academies of Science use their influence around the world in support of human rights.

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.

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

In education the appetite does indeed grow with eating. I have never known anyone to abandon study because they knew too much.