For many in the modern world, carving out time for both traditional seated meditation and exercise has become close to impossible.

It is unrealistic to want to be happy all the time.

The underlying idea is that you can prevent disease by balancing your body's pH... None of these claims are true. Furthermore, your body needs absolutely no help in adjusting its pH. Normally, the pH of blood and most body fluids is near seven, which is close to neutral. This is under very tight biological control because all of the chemical reactions that maintain life depend on it. Unless you have serious respiratory or kidney problems, body pH will remain in balance no matter what you eat or drink.

Just the attempt to learn a [new] language is like running different software through the brain.

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

The bottom line is that the human body is complex and subtle, and oversimplifying - as common sense sometimes impels us to do - can be hazardous to your health.

Improper breathing is a common cause of ill health. If I had to limit my advice on healthier living to just one tip, it would be simply to learn how to breathe correctly. There is no single more powerful -or more simple- daily practice to further your health and well being than breathwork.