That is why life is always like a sketch. No, sketch is not quite the word, because a sketch is an outline of something, the groundwork for a picture, whereas the sketch that is our life is a sketch for nothing, an outline with no picture.
Einmal ist keinmal, says Tomas to himself. What happens but once, says the German adage, might as well not have happened at all. If we have only one life to live,we might as well not have lived at all.
Milan Kundera - Unbearable Lightness of Being ( and Time)