--The Brothers Karamazov, Fyodor Dostoyevsky
Here is a sentiment that Sartre expressed as well, and more succinctly at that, when he wrote simply that "Hell is other people" (L'enfer est les autres). This in turn has often been variously misquoted to read something like 'The only problem with heaven is other people'. But the point is the same. We nurture a cozy feeling of love toward mankind that is assailable only by mankind--not the fuzzy ideal, but the walking, talking, nose blowing critter itself.
This brings to mind the scripture (John 4:20) which tells us that "If someone says,'I love God', and hates his brother, he is a liar; for he who does not love his brother whom he has seen, how can he love God whom he is not seen?
Well, you would be surprised, or more probably you would not be, for as anyone can see in social media posts and counterposts, the world is chock full of people who love God (supposedly) and at the same time maintain a nearly murderous disdain for their fellow human beings.
Ah well, just some things to think about, which have come to mind in my reading of the Brothers Karamazov, a very long, very dense, very talky novel indeed but one that has long been on my bucket list of things I really ought to read.