The sciences of today are bridges to reality; if then they lead not to reality, naught remains but fruitless illusion. By the one true God! If learning be not a means of access to Him, the Most Manifest, it is nothing but evident loss. It is incumbent upon thee to acquire the various branches of knowledge, and to turn thy face toward the beauty of the Manifest Beauty, that thou mayest be a sign of saving guidance amongst the peoples of the world, and a focal centre of understanding in this sphere from which the wise and their wisdom are shut out, except for those who set foot in the Kingdom of lights and become informed of the veiled and hidden mystery, the well-guarded secret. 73: O DAUGHTER OF THE KINGDOM! THY LETTER HATH COME ... O daughter of the Kingdom! Thy letter hath come and its contents make clear the fact that thou hast directed all thy thoughts toward acquiring light from the realms of mystery. So long as the thoughts of an individual are scattered he will achieve no results, but if his thinking be concentrated on a single point wonderful will be the fruits thereof. One cannot obtain the full force of the sunlight when it is cast on a flat mirror, but once the sun shineth upon a concave mirror, or on a lens that is convex, all its heat will be concentrated on a single point, and that one point will burn the hottest. Thus is it necessary to focus one’s thinking on a single point so that it will become an effective force. Thou didst wish to celebrate the Day of Ridván with a feast, and to have those present on that day engage in reciting Tablets with delight and joy, and thou didst request me to send thee a letter to be read on that day. My letter is this: O ye beloved, and ye handmaids of the Merciful! This is the day when the Day-Star of Truth rose over the horizon of life, and its glory spread, and its brightness shone out with such power that it clove the dense and high-piled clouds and mounted the skies of the world in all its splendour. Hence do ye witness a new stirring throughout all created things. See how, in this day, the scope of sciences and arts hath widened out, and what wondrous technical advances have been made, and to what a high degree the mind’s powers have increased, and what stupendous inventions have appeared. This age is indeed as a hundred other ages: should ye gather the yield of a hundred ages, and set that against the accumulated product of our times, the yield of this one era will prove greater than that of a hundred gone before. Take ye, for an example, the sum total of all the books that were ever written in ages past, and compare that with the books and treatises that our era hath produced: these books, written in our day alone, far and away exceed the total number of volumes that have been written down the ages. See how powerful is the influence exerted by the Day-Star of the world upon the inner essence of all created things!