Any decent writer writes because there's some deep internal need to keep learning.

Our current drug crisis is a tragedy born of a phony system of classification. For reasons that are little more than accidents of history, we have divided a group of nonfood substances into two categories: items purchasable for supposed pleasure (such as alcohol), and illicit drugs.

The world, unfortunately, rarely matches our hopes and consistently refuses to behave in a reasonable manner.

[Evolution is] one of the best documented, most compelling and exciting concepts in all of science.

The spandrels of San Marco and the Panglossian Paradigm.

All science is intelligent inference; excessive literalism is delusion, not a humble bowing to evidence.

Science is not a heartless pursuit of objective information; it is a creative human activity.