The wheel is an extension of the foot, the book is an extension of the eye; clothing, an extension of the skin, electric circuitry, an extension of the central nervous system

The wheel… is an extension of the foot.
The book… is an extension of the eye…
Clothing, an extension of the skin…
Electric circuitry, an extension of the central nervous system.

The modern nose, like the modern eye, has developed a sort of microscopic, intercellular intensity which makes our human contacts painful and revolting

In this electronic age we see ourselves being translated more and more into the form of information, moving toward the technological extension of consciousness.

The medium is the message. This is merely to say that the personal and social consequences of any medium - that is, of any extension of ourselves - result from the new scale that is introduced into our affairs by each extension of ourselves, or by any new technology.

Good taste is the first refuge of the non-creative. It is the last-ditch stand of the artist.