The question, "What is the purpose thereof?" cannot be asked about anything which is not the product of an agent; therefore we cannot ask what is the… - Moshe ben Maimon

This gift... which God gave us in order to enable us to perfect ourselves, to learn and to teach, must not be employed in doing that which is for us most degrading and perfectly disgraceful... Those who employ the faculty of thinking and speaking in the service of that sense which is no honour to us, who think more than necessary of drink and love, or even sing of these things; they employ and use the divine gift in acts of rebellion against the Giver, and in transgression of his commandments.

Silence is a fence around wisdom.

Through the constant revolution of the fifth element, with all contained therein, the four elements are forced to move and to change their respective positions, so that fire and air are driven into the water, and again these three elements enter the depth of the earth. Thus are the elements mixed together; and when they return to their respective places, parts of the earth, in quitting their places, move together with the water, the air and the fire. In this whole process the elements act and react upon each other. The elements intermixed, are then combined, and form at first various kinds of vapours; afterwards the several kinds of minerals, every species of plants, and many species of living beings, according to the relative proportion of the constituent parts. All transient beings have their origin in the elements, into which again they resolve when their existence comes to an end. The elements themselves are subject to being transformed from one into another; for although one substance is common to all, substance without form is in reality impossible, just as the physical form of these transient beings cannot exist without substance.