We are always repeating ancestral signs which are quite useless now. When a great actress wants to express hate she draws back her charming lips and shows her canine teeth, an unconscious sign of cannibalism. We shake hands with a friend to prevent him using it to strike us, and we take off our hats because our ancestors used to humbly offer their heads, to the bigwigs of those days, to be cut off.

Les silences du colonel Bramble (The Silence of Colonel Bramble)