Individual scientists like myself - and many more conspicuous - pointed to the dangers of radioactive fallout over Canada if we were to launch nuclear weapons to intercept incoming bombers.

Authority in science exists to be questioned, since heresy is the spring from which new ideas flow.

[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.

It takes a trained and discerning researcher to keep the goal in sight, and to detect evidence of the creeping progress toward it.

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

Science is an enterprise that can only flourish if it puts the truth ahead of nationality, ethnicity, class and color.

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