All essential knowledge relates to existence, or only such knowledge as has an essential relationship to existence is essential knowledge.
Soren KierkegaardDeath is not earnest in the same way the eternal is. To the earnestness of death belongs precisely that remarkable capacity for awakening, that resonance of a profound mockery which, detached from the thought of the eternal, is an empty and often brash jest, but together with the thought of the eternal is just what it should be, utterly different from the insipid solemness which least of all captures and holds a thought with tension like that of death.
Soren KierkegaardTo cheat oneself out of love is the most terrible deception; it is an eternal loss for which there is no reparation, either in time or in eternity.
Soren Kierkegaard