I know of no culture in the world at present or any time in the past that has not been heavily involved with one or more psychoactive substances.

As an undergraduate at Harvard in the 1960s, I was fascinated by my visits to psychologist B.F. Skinner's laboratory.

At the very center of our being is rhythmic movement, a cyclic expansion and contraction that is both in our body and outside it, that is both in our mind and in our body, that is both in our consciousness and not in it.

Imagine a world in which medicine was oriented toward healing rather than disease, where doctors believed in the natural healing capacity of human beings and emphasized prevention above treatment. In such a world, doctors and patients would be partners working toward the same ends.

Drugs don't have spiritual potential, human beings have spiritual potential. And it may be that we need techniques to move us in that direction, and the use of psychoactive drugs clearly is one path that has helped many people.

It is more important to eat some carbohydrates at breakfast, because the brain needs fuel right away, and carbohydrate is the best source.

True, nuts are high in fat, but most of them contain monounsaturated fat that is good for the heart. In fact, eaten in moderation, nuts can lower your risk of heart disease and heart attack.