Ah! That's it: irony.
Irony is your reason to be moral.
Isn't it ironic, that you were slime and then you were snake?
Isn't it ironic, that you were snake and then you were man?
Isn't it ironic, that you were man and then you became a god?
I see now that your understanding of a moral act, is the exercise of the most possible irony:
Isn't it ironic that you believe in survival of the fittest, but you are still moral?
So much hinging on irony. If you did not make a point of assembling examples of irony, you would look foolish
AND LOOK I HAVE DONE IT FOR YOU!
Isn't it ironic that some guy called you an animal, and you still helped an old lady cross the street?
Isn't it ironic that your mates all believe in animism, and you still did the best you could in your job?
Isn't it ironic...