I have never believed in a single truth. Neither my own, nor those of others. I believe in all schools, all theories can be useful in some place, at some time. But I have discovered that one can only live by a passionate, and absolute, identification with a point of view…. As time goes by, as we change, as the world changes, targets alter and the viewpoint shifts…. For a point of view to be of any use at all, one must commit oneself totally to it, one must defend it to the very death. Yet, at the same time, there is an inner voice that murmurs: 'Don’t take it too seriously. Hold on tightly, let go lightly.'