“Sometimes that's all life is… One desperate act after another.”

Source: Catching Fire

Light (1919), Ch. VII - A Summary
Context: One after another, sundry women have occupied my life. Antonia Veron was first. Her marriage and mine, their hindrance and restriction, threw us back upon each other as of yore. We found ourselves alone one day in my house — where nothing ever used to happen, and she offered me her lips, irresistibly. The appeal of her sensuality was answered by mine, then, and often later. But the pleasure constantly restored, which impelled me towards her, always ended in dismal enlightenments. She remained a capricious and baffling egotist, and when I came away from her house across the dark suburb among a host of beings vanishing, like myself, I only brought away the memory of her nervous and irritating laugh, and that new wrinkle which clung to her mouth like an implement.
Then younger desires destroyed the old, and gallant adventures begot one another. It is all over with this one and that one whom I adored. When I see them again, I wonder that I can say, at one and the same time, of a being who has not changed, "How I loved her!" and, "How I have ceased to love her!"

Source: Does My Head Look Big In This?

Source: The Happy Prince and Other Tales

Source: Clockwork Angel

Variant: That there are no random acts. That we are all connected. That you can no more separate on life from another than you can separate a breeze from the wind.
Source: The Five People You Meet in Heaven (2003)
Context: "All the people you meet here have one thing to teach you." Eddie was skeptical. His fists stayed clenched. "What?" he said. "That there are no random acts. That we are all connected. That you can no more separate one life from another than you can separate a breeze from the wind."

"Exams work because they're scary", Daily Telegraph, 12 May 2005, p. 22.
2000s, 2005

Source: The Dark Is Rising (1965-1977), The Grey King (1975), Chapter 6 “Bird Rock” (pp. 71-72)