Friend, if you care about something, I care about it, too.
I care about it for the sake of its importance to you. I may care solely for that reason and no other.
I may not be able to care about it as energetically or as exhaustively as you do. I may not reach the same conclusions you have reached, and we might never agree on what is true and right on this matter.
But if you care about something, I will do everything I can to understand why you care. I will try to see the validity of your understanding, and in light of that understanding, care with you. I will see how far I can go in sharing your convictions. Where I am unable to share your convictions, I will try to explain why and justify it.
In this way, I will make both my agreement and disagreement with you an expression of our friendship.
I cannot promise to believe what you want me to believe. I cannot promise to feel what you want me to feel. But I can promise you this: I will care as much as I am able about what you care about.
And where one or the other of us refuses to care, there we find the limits of our friendship.