We can never know what we want, because, living only one life, we can neither compare it with our previous lives nor perfect it in our lives to come. [...] And what can life be worth if the first rehearsal for life is life itself? 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.

Auteur: Milan Kundera