"If you deliberately accept being less than you are capable of being, then I warn you that you'll be unhappy for the rest of your life."
Peter Drucker also wrote a book in 2001 called "The Essential Drucker." It is a combination of the past sixteen years of Peter Drucker's work on management.
"I became an immediate convert--Maslow's evidence is overwhelming. But to date very few people have paid much attention." -- Peter Drucker, 1999
“Any attempt by management to enforce behavior that is contrary to human nature is preordained to fail. Conversely, management methods that compliment human nature are sure to provide wealth and well being for all concerned.”