“It was as if Jed had moved from one dimension to another. His original dimension hadn't reported him missing, and his new dimension didn't acknowledge his presence. Maybe what he'd really done was end up somewhere between the two. Some days he almost felt invisible.”

“There is a fifth dimension beyond that which is known to man ... a dimension as vast as space and as timeless as infinity. It is the middle ground between light and shadow, between science and superstition, and it lies between the pit of man's fears and the summit of his knowledge. This is the dimension of imagination.”

“You unlock this door with the key of imagination. Beyond it is another dimension: a dimension of sound, a dimension of sight, a dimension of mind. You’re moving into a land of both shadow and substance, of things and ideas. You’ve just crossed over into… the Twilight Zone.”

“History is the long struggle of man, by exercise of his reason, to understand his environment and to act upon it. But the modern period has broadened the struggle in a revolutionary way. Man now seeks to understand, and act on, not only his environment, but himself; and this has added, so to speak, a new dimension to reason and a new dimension to history.”

“The mind, once stretched by a new idea, never returns to its original dimensions.”

“Man’s mind, once stretched by a new idea, never regains its original dimensions.”