The ancient educational thinking also emphasized the importance of a certain atmosphere in which alone any worthwhile education is possible. First, there must be a complete rapport between the teacher and the taught. "May we study together. May God protect us both. May we never spite each other", that is the prayer of the teacher and the pupil with which several Upanishads open. There must be an atmosphere of serious inquiry, of hankering for truth for its own sake, of affection, deference, service and respect. Hindus believed that without this environment, no higher education is possible.