My friend Boris Yakubchik posted this at the Effective Altruists FB page, and it is worth a quick read:
The Best Way to Win an Argument
Reminds me of this, from AML:
"Effective advocates understand this evolution of people’s views. They also recognize they can’t change anyone’s mind. No matter how elegant an argument, real and lasting change comes only when others are free to explore new perspectives. Of course, there is no magic mechanism to bring this about. The simplest way to encourage others to open their hearts and minds is for our hearts and minds to be open, believing in our own potential to learn and grow. I believe sincerity and humility are imperative for advocates, because no one has all the answers."