When I was a young man, I never thought of what I might have inherited from previous generations of my family. I am not talking about money or possessions but about the characteristics that make us who we are. None of us can dissociate ourselves from the people who went before. I understand that quite clearly now. Of course, we inherit certain physical characteristics - the colour of our skin, the shape of our eyes, our heights, the shape of our fingers and toes. These are relatively easy things to identify but what's not so easy to discern is the link between one's inner self and and the inner selves of previous generations. I believe that tendencies are frequently inherited. Someone who tends to be jolly with an optimistic outlook will tend to have children with similarly happy souls. Equally, those who are drawn to the dark well of depression will tend to have youngsters who are pulled that way too. Parents who read books often pass that passion on to their children a...