At the heart of science lies discovery which involves a change in worldview. Discovery in science is possible only in societies which accord their citizens the freedom to pursue the truth where it may lead and which therefore have respect for different paths to that truth.

Idealism is the highest form of reason.

For science must breathe the oxygen of freedom.

If we treasure our own experience and regard it as real, we must also treasure other people's experience.

[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.

Scientia is knowledge. It is only in the popular mind that it is equated with facts.

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.