As a physician, I recommend nutritious hemp seeds and oil to anyone interested in maintaining a healthy diet. Everyone will benefit when American farmers can grow this amazing crop once again.

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

The notion that a human being should be constantly happy is a uniquely modern, uniquely American, uniquely destructive idea.

It's rare - too rare, I have to say - for botanists to become doctors.

Routines may include taking a warm bath or a relaxing walk in the evening, or practicing meditation/relaxation exercises. Psychologically, the completion of such a practice tells your mind and body that the day's work is over and you are free to relax and sleep.

You've got to experiment to figure out what works.

Gardening is not trivial. If you believe that it is, closely examine why you feel that way. You may discover that this attitude has been forced upon you by mass media and the crass culture it creates and maintains. The fact is, gardening is just the opposite - it is, or should be, a central, basic expression of human life.