The history of philosophy is not, like the history of the sciences, to be studied with the intellect alone. That which is receptive in us and that which impinges upon us from history is the reality of man's being, unfolding itself in thought.
I was making a film called The White Tower at the foot of Mont Blanc - the one thing I learned from that experience was that it's more difficult to go down a mountain than to go up. A lot of people don't realize that.