the transitoriness of our existence in no way makes it meaningless. But it does constitute our responsibleness; for everything hinges upon our realizing the essentially transitory possibilities. Man constantly makes his choice concerning the mass of present potentialities; which of these will be condemned to nonbeing and which will be actualized?

the struggle is doomed to fail. Because your quantity of time is so limited, you’ll never reach the commanding position of being able to handle every demand that might be thrown at you or pursue every ambition that feels important; you’ll be obliged to make tough choices instead. And because you can’t dictate, or even accurately predict, so much of