Irwin M. Jacobs Quotes
I've always found it very important to do your homework first and then talk.
Citations
Bryant, Adam. "No Yelling. Just Do Your Homework." The New York Times, 11 Nov. 2012, p. BU2.
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Irwin Mark Jacobs is an American electrical engineer, billionaire, a co-founder and former chairman of Qualcomm, and chair of the board of trustees of the Salk Institute.