“In a course of a lifetime, what does it matter?”

Source: The Kite Runner

Source: Power of Three (1976), p. 9.

Source: The Little White Bird (1902), Ch. 14
Context: If you ask your mother whether she knew about Peter Pan when she was a little girl she will say, "Why, of course, I did, child," and if you ask her whether he rode on a goat in those days she will say, "What a foolish question to ask; certainly he did." Then if you ask your grandmother whether she knew about Peter Pan when she was a girl, she also says, "Why, of course, I did, child," but if you ask her whether he rode on a goat in those days, she says she never heard of his having a goat. Perhaps she has forgotten, just as she sometimes forgets your name and calls you Mildred, which is your mother's name. Still, she could hardly forget such an important thing as the goat. Therefore there was no goat when your grandmother was a little girl. This shows that, in telling the story of Peter Pan, to begin with the goat (as most people do) is as silly as to put on your jacket before your vest.
Of course, it also shows that Peter is ever so old, but he is really always the same age, so that does not matter in the least.

Source: The Wizard

Source: Mrs. Dalloway

Reverence for Life (1969)
Context: I do not want to frighten you by telling you about the temptations life will bring. Anyone who is healthy in spirit will overcome them. But there is something I want you to realize. It does not matter so much what you do. What matters is whether your soul is harmed by what you do. If your soul is harmed, something irreparable happens, the extent of which you won't realize until it will be too late.

Source: Deep Work: Rules for Focused Success in a Distracted World

Source: Clockwork Angel