From The Journals of Kierkegaard, 1834-54:
And this is the simple truth: that to live is to feel oneself lost. He who accepts it has already begun to find himself, to be on firm ground. Instinctively, as do the shipwrecked, he will look around for something to which to cling; and that tragic, ruthless glance, absolutely sincere because it is a question of salvation, will cause him to bring order into the chaos of his life. These are the only genuine ideas, the ideas of the shipwrecked. All the rest is rhetoric, posturing, farce.