Lyndon Johnson actually said...

A leader makes a mark on his time.

It also says something about the man who leads those men and the man who prepares those men for the call they must answer.

Probably the most powerful head of steam ever created is that of young people trying to set on fire a world that they think is all wet.

It works best not for those who 'turn off' or those who 'drop out'--but particularly for those who 'butt in'.