" We use the words relationship, trust, and openness glibly and frequently, as if we think that everyone will, of course, understand what we mean. Yet when we ask someone to define any one of these three words, we get either a blank stare, a disdainful look implying that we must be stupid, or definitions that don’t really explain anything and that don’t even agree with one another. "

― Edgar H. Schein , Humble Consulting: How to Provide Real Help Faster