We gain the insight to see ourselves through the friendships we make. They mirror us to ourselves. In them we see clearly what we do not have as well as what the world cannot do without. They do not judge us or condemn us or reject us. They hold us up while we grow, laughing and playing as we go. They bring us to the best of ourselves. “One’s friends,” George Santayana wrote, “are that part of the human race with which one can be human.