"Love one another." It's one of Jesus' clearest commands. He even said that the truest test of our faith in God is our love for people. And deep down, we all know it's true: we are social beings, designed for connection with others. When our relationships are strong we're healthier, we live longer, and we're just happier. So... what's the problem? Why is our culture experience so much suspicion, division, and hatred? And on a personal level, why do we struggle with mistrust, unforgiveness, isolation and divorce?