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.
Abdu'l-BaháTo promote knowledge is thus an inescapable duty imposed on every one of the friends of God.
Abdu'l-BaháThe pure heart is one that is entirely cut away from self. To be selfless is to be pure.
Abdu'l-BaháTherefore, in this world he must prepare himself for the life beyond. That which he needs in the world of the Kingdom must be obtained here. Just as he prepared himself in the world of the matrix by acquiring forces necessary in this sphere of existence, so, likewise, the indispensable forces of the divine existence must be potentially attained in this world.
Abdu'l-Bahá