It seems to me that at some point in life you have to accept certain things that you can't change. Your neighbor's choice of pink exterior paint, your crooked smile, or maybe the health of someone you care about.
But how can acceptance be virtuous? Accepting leads to complacency. A stall and agreement to try no further. But is this not defeat? Is defeat ever virtuous?
You may be told by countless doctors to expect your friend's sickness. And to accept that there's nothing anyone can do about it. But is this what people said of the many plagues which mankind has conquered? Did one once say, "you can't light up a cave without fire, just accept it"? Did we accept that going into space was impossible? Did we accept that exceeding the speed of sound was impossible?
I am not sure what to make of acceptance. Perhaps to say something is impossible simply means you don't understand it. Perhaps the only grain of virtue is to pursue what you believe to be right, whether it is said to be possible or not. Maybe I should not accept the unsolvable problems that deeply concern me.
On the other hand, without acceptance you can never be calm. You can never rest. Is it a virtue? Is it a balance?