Answer: A great teacher lets students know that they can depend not only on her, but also on the entire class. 3. A great teacher is warm, accessible, enthusiastic and caring. Great teachers possess good listening skills and take time out of their way-too-busy schedules for anyone who needs them.
Its saying basically that there are hidden secrets underneath people. That every smile, nod or wave has a hidden agenda. It's like warning to be wary of who you trust.