Charles M. Schulz said this quote

“ There must be different kinds of loneliness, or at least different degrees of loneliness, but the most terrifying loneliness is not experienced by everyone and can be understood by only a few. I compare the panic in this kind of loneliness to the dog we see running frantically down the road pursuing the family car. He is not really being left behind, for the family knows it is to return, but for that moment in his limited understanding, he is being left alone forever, and he has to run and run to survive. It is no wonder that we make terrible choices in our lives to avoid loneliness. ”