the unbearable lightness of being

Human life occurs only once, and the reason we cannot determine which of our decisions are good and which bad is that in a given situation we can make only one decision; we are not granted a second, third, or fourth life in which to compare various decisions.
—  The Unbearable Lightness of Being, Milan Kundera
Yet somewhere deep down a thin thread still ties us to that far-off misty Paradise, where Adam leans over a well and, unlike Narcissus, never even suspects that the pale yellow blotch appearing in it is himself. The longing for Paradise is man’s longing not to be man.
—  The Unbearable Lightness of Being, Milan Kundera