The diversity of institutions has made possible the combination of government ownership and private enterprise which has been a further characteristi… - Harold Innis

Writing with a simplified alphabet checked the power of custom of an oral tradition but implied a decline in the power of expression and the creation of grooves which determined the channels of thought of readers and later writers.

The concepts of time and space reflect the significance of media to civilization. Media that emphasize time are those that are durable in character, such as parchment, clay, and stone. The heavy materials are suited to the development of architecture and sculpture. Media that emphasize space are apt to be less durable and light in character, such as papyrus and paper. The latter are suited to wide areas in administration and trade. The conquest of Egypt by Rome gave access to supplies of papyrus which became the basis of a large administration empire.

Innis comments on how the invention of writing and the advancement of military techniques led to the founding of ancient empires: The sword and the pen worked together. Power was increased by concentration in a few hands, specialization of function was enforced, and scribes with leisure to keep and study records contributed to the advancement of knowledge and thought. The written record signed, sealed, and swiftly transmitted was essential to military power and the extension of government. Small communities were written into large states and states were consolidated into empire. The monarchies of Egypt and Persia, the Roman empire and the city states were essentially products of writing.