The excellences of teaching and learning are manifest. For if knowledge is the most excellent of things, the process of acquiring it would then be a search for the most excellent, and imparting it would be promoting the most excellent. For human interests extend to both the material and the spiritual worlds, and no order exists in the latter without existing in the former because this world is a preparation for the next, and is the instrument which leads to Allah anyone who uses it as such, a home for him who takes it as a dwelling place. The affairs of this world, however, do not become orderly except through human activities.

 [IHYAA]