The membership that i took very recently at the British Council Library was first put to use in borrowing this book by John Cartwright.
A very informative and readable book that I would recommend to any one wondering why humans behave the way they do most of the time. I warn you, that it might let you down; especially if you are a person who believes that there is a purpose to life.
Two lines from the book that stayed back with me
One awesome implication of Darwinism, that many find difficult to stomach, is that there is no ultimate purpose, design or destiny to the natural world. Natural selection is not driving life to any purticular end or goal, although it is capable of producing intelligent beings such as ourselves wo can worry about this.