Who said "Leadership is knowing when to make the hard calls."?

This quote is attributed to Roz Doyle.

Leadership is knowing when to make the hard calls. - Roz Doyle

"Leadership is knowing when to make the hard calls."

Roz Doyle Leadership

"I'm a radio call screener, not a therapist's assistant"

"That's what I love about this job - you never know who's going to call"

"Frasier, you're killing me here"

"I've seen it all in this job"

"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"