“A change in the type of medium implies a change in the type of appraisal and hence makes it difficult for one civilization to understand another.”
2007 edition, p. 29.
Empire and Communications (1950)
Context: The significance of a basic medium to its civilization is difficult to appraise since the means of appraisal are influenced by the media, and indeed the fact of appraisal appears to be peculiar to certain types of media. A change in the type of medium implies a change in the type of appraisal and hence makes it difficult for one civilization to understand another.
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Harold Innis 22
Canadian professor of political economy 1894–1952Related quotes

Industrialism and Cultural Values (1950), a paper presented at meetings of the American Economic Association in Chicago, published in The Bias of Communication (1951) p. 138.
The Bias of Communication (1951)

A Plea for Time (1950), a paper presented at the University of New Brunswick, published in The Bias of Communication (1951) p. 64.
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"The Cause and Nature of Radioactivity" in Philosophical Magazine (September 1902)

On types of judicial writing, in "Law and Literature" in Law and Literature and Other Essays and Addresses (1931), p. 10
Other writings

During a tour of the United States, as quoted in The New York Times (5 June 1990) http://query.nytimes.com/gst/fullpage.html?res=9C0CE3DD1F30F936A35755C0A966958260&sec=&spon=&pagewanted=all
1990s