Source: Reauthorization of the Higher Education Act and Related Measures Part 5 Hearing before the subcommittee on Postsecondary education of the committee on Education and Labor. House of Representatives, 96th Congress, May 25, 1979
Where was it found? Hathitrust:
Search term “10% of what we”
What was found: a reference to William Glasser, and:
"we learn.....
10% of what we read
20% of what we hear
30% of what we see
50% of what we both see and hear
70% of what is discussed with others
80% of what we experience personally (an activity in real life)
95% of what we teach someone else