We must adapt the rules by which we live to the world of today. Each new morsel of knowledge takes us beyond the world of yesterday into new areas of possibility, or what in complexity science we call new state space. Only by stagnation can we avoid progress, only by ignorance can we avoid learning by our experiences. If we are to maximise our personal and social fitnesses we must replace dogma by openness and tolerance. We should take into account the wisdom of the scriptures, but divorce them from the primitive lifestyles for which they were written. We must also incorporate the wisdom of all the world traditions, going beyond the parochial idea that one document or tradition can contain every valid spiritual or material value. Different cultures require different behaviours, yet all can be equally valid and equally moral or worthwhile in their own context.