I may live for thirty years, or perhaps forty, or maybe just one day: therefore I have resolved to use this day, or whatever I have to say in these thirty years or whatever I have to say this one day I may have to live — I have resolved to use it in such a way that if not one day in my whole past life has been used well, this one by the help of God will be.

The Journals of Søren Kierkegaard, JP VIII 1 A 533