Knowledge has to be improved, challenged, and increased constantly, or it vanishes. – Peter Drucker
We know nothing about motivation. All we can do is write books about it. – Peter Drucker

Knowledge has to be improved, challenged, and increased constantly, or it vanishes. – Peter Drucker
We know nothing about motivation. All we can do is write books about it. – Peter Drucker
Rank does not confer privilege or give power. It imposes responsibility. – Peter Drucker
They taught us because they wanted to pass the knowledge on and educate young musicians. It was not because they had to teach because they failed as musicians. There is a huge difference in the reasons why someone is teaching and what they can offer and what they cannot offer. – Miroslav Vitous