Every kind of knowledge, every science, is as a tree: if the fruit of it be the love of God, then is it a blessed tree, but if not, that tree is but dried-up wood, and shall only feed the fire

By nothing,under no conditions, be ye perturbed.

...knowledge is the cause of human progress.

Among the greatest of all great services is the education of children, and promotion of the various sciences, crafts and arts. Praised be God, ye are now exerting strenuous efforts toward this end. The more ye persevere in this most important task, the more will ye witness the confirmations of God, to such a degree that ye yourselves will be astonished.

One must see in every human being only that which is worthy of praise. When this is done, one can be a friend to the whole human race. If, however, we look at people from the standpoint of their faults, then being a friend to them is a formidable task............ .....Thus is it incumbent upon us, when we direct our gaze toward other people, to see where they excel, not where they fail.

The pure heart is one that is entirely cut away from self. To be selfless is to be pure.

Observe that the body of man is confined to a small place; it covers only two spans of earth. But the spirit and mind of man travel to all countries and regions - even through the limitless space of the heavens - surround all that exists, and make discoveries in the exalted spheres and infinite distances. This is because the spirit has no place; it is placeless; and for the spirit the earth and the heaven are as one since it makes discoveries in both.