Does one grow wise in increments?

“Does one grow wise in increments? By fractioning a life and then summing it? By stacking sand? An infant, in his first sleepiness, must let go of the world; a man must learn to die. What comes between are the grains of sand. Ambition. Loss. Envy. Desire. Hatred. Love. Tenderness. Joy. Shame. Loneliness. Ecstasy. Ache. Surrender. Live long enough and you will solve them all.”
― Ethan Canin, A Doubter's Almanac