Very interesting. Thank you. I had never read that fatalism drives stoicism. I'm glad I have never described myself as a stoic. I have equated the message of the serenity prayer with what I thought was the central precept of stoicism, that serenity ensues from realizing we cannot change another person or the past but we can change our own attitudes and reactions and expectations. I have not extended this to mean that we cannot effect change on a societal level or that we must accept injustice. When I talk about acceptance, I say it helps to practice acceptance on a moment by moment basis without accepting the permanence of an unacceptable situation. If anyone wants to see further discussion of my thoughts on acceptance, https://medium.com/promptly-written/spiritual-prompts-for-the-week-of-june-12th-18th-86877724cd6b .

[edit--based on the author's reply, I see that my comment is capable of being misunderstood so I came back to clarify. In my essays, I say: "If you desire to change the world, great, I sure do. Acceptance does not mean turning the other cheek regarding either a person or the world. It means, in this respect, do not let the situation eat you up inside."]