Louis Kahn saw architecture as the meeting of the measurable and the unmeasurable. He used the word "Silence" for the unmeasurable, for that which is not yet; and the word "Light" for the measurable, for that which is. Kahn saw architecture as existing at a threshold between Silence and Light, which he called the Treasury of the Shadow. He felt that a great building begins with a realization in the unmeasurable. Measurable means are then used to build it, and when it is finished, it gives us access back to the original realization in the unmeasurable.
John Lobell, Between Silence and Light: Spirit in the Architecture of Louis I. Kahn













