“Of all man’s instruments, the most wondrous, no doubt, is the book. The other instruments are extensions of his body. The microscope, the telescope, are extensions of his sight; the telephone is the extension of his voice; then we have the plow and the sword, extensions of the arm. But the book is something else altogether: the book is an extension of memory and imagination.”

“De los diversos instrumentos del hombre, el más asombroso es, sin duda, el libro. Los demás son extensiones de su cuerpo. El microscopio, el telescopio, son extensiones de su vista; el teléfono es extensión de la voz; luego tenemos el arado y la espada, extensiones de su brazo. Pero el libro es otra cosa: el libro es una extensión de la memoria y de la imaginaciónOf all man’s instruments, the most wondrous, no doubt, is the book. The other instruments are extensions of his body. The microscope, the telescope, are extensions of his sight; the telephone is the extension of his voice; then we have the plow and the sword, extensions of the arm. But the book is something else altogether: the book is an extension of memory and imagination.”

“…the gavel became an extension of his arm and he used it to bludgeon the court into submission.”

“Most of the tools from medieval times were extensions of the physical self. Tools are now extensions of the mental self.”

“Beckett trained his eyes on Livia as if she were an extension of his brother.”

“A pencil is an extension of a finger writing in the sand. But our electronic media are extensions of our brains.”