Managers vs Leaders

"When I recently spoke to a Manager, I got the impression they were important, when I recently spoke to a Leader, I got the impression I was important!"

Do modern-thinking business organisations need Leaders not just Managers?

Some Managers may indeed be natural Leaders however, contrary to what some believe, just because someone wears the label Manager’ does not by default make them a Leader! Good Managers can be terrible Leaders, and equally, good Leaders can be terrible Managers - do some organisations confuse the two?