From The Dry Salvages, y T. S. Eliot:
The point of intersection of the timeless
 With time, is an occupation for the saint—
  No occupation either, but something given
 And taken, in a lifetime's death in love,
 Ardour and selflessness and self-surrender.
 For most of us, there is only the unattended
 Moment, the moment in and out of time,
 The distraction fit, lost in a shaft of sunlight,
 The wild thyme unseen, or the winter lightning
 Or the waterfall, or music heard so deeply
 That it is not heard at all, but you are the music
    While the music lasts.