This quote is written / told by Peter Drucker between November 19, 1909 and November 11, 2005. He/she was a famous Businessman from USA.
The author also have 38 other quotes.
"Raising children is an incredibly hard and risky business in which no cumulative wisdom is gained: each generation repeats the mistakes the previous one made"
"Architects are pretty much high-class whores. We can turn down projects the way they can turn down some clients, but we've both got to say yes to someone if we want to stay in business"