Edward Tufte and the data-to-ink ratio

Really enjoyed this quote from Edward Tufte:

In the book The Visual Display of Quantitative Information, data visualization designer Edward Tufte introduced the data-ink ratio concept, which is the proportion of ink devoted to the non-redundant display of data-information.

From this, Tufte derives one of his most famous principles: “Erase non-data-ink, within a reason. Ink that fails to depict statistical information does not have much interest to the viewer of a graphic; in fact, sometimes such non-data-ink clutters up the data, as in the case of thick mesh of grid lines.”