Philosophy is perfectly right in saying that life must be understood backward. But then one forgets the other clause — that it must be lived forward. The more one thinks through this clause, the more one concludes that life in temporality never becomes properly understandable, simply because never at any time does one get perfect repose to take a stance — backward.
— JP I 1030 (Pap. IV A 164) Soren Kierkegaard.