Life, in both its knowing and its doing, has become today a "free fall," so to say, into the next minute, into the future. So that, whereas, formerly, those not wishing to hazard the adventure of an individual life could rest within the pale of a comfortably guaranteed social order, today all the walls have burst. It is not left to us to chooseto hazard the adventure of an unprecedented life: adventure is upon us, like a tidal wave.