At first I assumed hate was the opposite of love. But it isn't. The opposite of love is indifference.

It certainly would have been adaptive for ancestral man to have a chubby wife during stressful times of famine. Not only would she have had more calories to burn, and thus more energy and endurance, but since fat stores estrogen, she would have remained fertile for longer.

Keep an open heart. We are wired to find love.

From my studies of genetics and neuroscience I have come to believe that people fall into four broad personality types - each influenced by a different brain chemical: I call them the Explorer, Builder, Director, and Negotiator.

When people tell you to walk a certain way, it's like not thinking of a purple tomato. You can't not do it.

The only people you and I are likely to know in common are people in the news - politicians, journalists and celebrities.

I was married and divorced at 23.