http://thinkexist.com/quotation/we-learn-of-what-we-read-of-what-we-hear-of-what/397216.html

[yyamaguchi]

「“We Learn . . . 10% of what we read 20% of what we hear 30% of what we see 50% of what we see and hear 70% of what we discuss 80% of what we experience 95% of what we teach others.”」