Nature, in the broadest sense, is the natural, physical, or material world or universe. "Nature" can refer to the phenomena of the physical world, and also to life in general. The study of nature is a large, if not the only, part of science. Although humans are part of nature, human activity is often understood as a separate category from other natural phenomena.
A good teacher does not draw out; he gives out, and what he gives out is love. And by love I mean approval, or if you like, friendliness, good nature. The good teacher not only understands the child: he approves of the child.