Who said "Leadership is found in standing alone for principle."?

This quote is attributed to Pierre Boulez.

Leadership is found in standing alone for principle. - Pierre Boulez

"Leadership is found in standing alone for principle."

Pierre Boulez Leadership

Avant-Garde Composer Conductor French 1925–2016

"Music is the vehicle for human emotion. It has always been."

"Compose yourself, and the world will compose itself."

"The serial technique is not a philosophy but a method."

"I think music is the most beautiful of all the arts."

"A leader must be fair and just."

"Integrity is everything."

"One must take responsibility for one's environment."

"In this house, I make the decisions"