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

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

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

A new sense of shared international responsibility is unmistakable in the voices of the United Nations and its agencies, and in the civil society of thousands of supra-national NGOs.

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

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

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