" If you can imagine this, perhaps you can understand that someone from another planet who came to visit us would have a similar experience with humans. But it isn’t our skin that is full of wounds. What the visitor would discover is that the human mind is sick with a disease called fear. Just like the description of the infected skin, the emotional body is full of wounds, and these wounds are infected with emotional poison. The manifestation of the disease of fear is anger, hate, sadness, envy, and hypocrisy; the result of the disease is all the emotions that make humans suffer. All humans are mentally sick with the same disease. We can even say that this world is a mental hospital. But this mental disease has been in this world for thousands of years, and the medical books, the psychiatric books, and the psychology books describe the disease as normal. They consider it normal, but I can tell you it is not normal. When the fear becomes too great, the reasoning mind starts to fail and can no longer take all those wounds with all the poison. In the psychology books we call this a mental illness. We call it schizophrenia, paranoia, psychosis, but these diseases are created when the reasoning mind is so frightened and the wounds so painful, that it becomes better to break contact with the outside world. Humans live in continuous fear of being hurt, and this creates a big drama wherever we go. The way humans relate to each other is so emotionally painful that for no apparent reason we get angry, jealous, envious, sad. To even say “I love you” can be frightening. But even if it’s painful and fearful to have an emotional interaction, still we keep going, we enter into a relationship, we get married, and we have children. In order to protect our emotional wounds, and because of our fear of being hurt, humans create something very sophisticated in the mind: a big denial system. In that denial system we become the perfect liars. We lie so perfectly that we lie to ourselves and we even believe our own lies. We don’t notice we are lying, and sometimes even when we know we are lying, we justify the lie and excuse the lie to protect ourselves from the pain of our wounds. "
― Miguel Ruiz , The Mastery of Love: A Practical Guide to the Art of Relationship --Toltec Wisdom Book