Virtues (2) Time (2) Thought and thinking (2) Reasoning (2) Perspective (2) Peace (2) Nature (2) Human beings (2) Interpersonal relations (2) Id (Psychology) (2) Humility (2) Ethics (2) Education (2) Dependency (2) Concepts (2) Building (2) Peace--Study and teaching (2) Dependencia (2) Educación para la paz (2) Clave (2) Humildad (2) Pensamiento (2) Educación (2) Conceptos (2) Perspectiva (2) Raciocinio (2) Virtudes (2) Naturaleza (2) Paz (2) Hombre (2)