American author and organizational consultant Warren G. Bennis (1925-2014) wrote in On Becoming a Leader (1989):
 
“The manager has his or her eye always on the bottom line; the leader’s eye is on the horizon.”
 
Bennis used the saying in many books and speeches.
 
   
Wikipedia: Warren Bennis
Warren Gamaliel Bennis (March 8, 1925 – July 31, 2014) was an American scholar, organizational consultant and author, widely regarded as a pioneer of the contemporary field of Leadership studies. Bennis was University Professor and Distinguished Professor of Business Administration and Founding Chairman of The Leadership Institute at the University of Southern California.

“His work at MIT in the 1960s on group behavior foreshadowed—and helped bring about—today’s headlong plunge into less hierarchical, more democratic and adaptive institutions, private and public,” management expert Tom Peters wrote in 1993 in the foreword to Bennis’ An Invented Life: Reflections on Leadership and Change.
 
Management expert James O’Toole, in a 2005 issue of Compass, published by Harvard University’s John F. Kennedy School of Government, claimed that Bennis developed “an interest in a then-nonexistent field that he would ultimately make his own—leadership—with the publication of his ‘Revisionist Theory of Leadership’ in Harvard Business Review in 1961.” O’Toole observed that Bennis challenged the prevailing wisdom by showing that humanistic, democratic-style leaders are better suited to dealing with the complexity and change that characterize the leadership environment.
       
Google Books
On Becoming a Leader
By Warren G Bennis
Reading, MA: Addison-Wesley Pub. Co.
1989
Pg. 54:
The manager has his or her eye always on the bottom line; the leader’s eye is on the horizon.
 
Google Books
An Invented Life:
Reflections on Leadership and Change
By Warren G. Bennis
Reading, MA: Addison-Wesley Publishing Company
1993
Pg. 89:
The manager has his eye on the bottom line; the leader has his eye on the horizon.
 
Los Angeles (CA) Times
THE SUNDAY PROFILE: An Invented Life:
Fueled by the desire to be everything his family was not, Warren Bennis created a world full of power and prestige. But now the business guru is wrestling with thoughts of fun.
June 19, 1994 | ROY RIVENBURG | TIMES STAFF WRITER
(...)
The talk continues with a compendium of maxims (“The manager has his eye on the bottom line; the leader has his eye on the horizon”), one-liners (“Trying to lead college faculty is like herding cats”) and, of course, Bennis’ prescription for management success in the late 20th Century: Dump the autocratic, “command-and-control” techniques of the past in favor of a workplace that encourages employee self-esteem, creativity, dissent, empowerment and teamwork.
 
Google Books
Managing People Is Like Herding Cats
By Warren Bennis
Provo, UT: Executive Excellence Pub.
1999
Pg. 63:
The manager has his or her eye on the bottom line; the leader has his or her eye on the horizon.
     
Los Angeles (CA) Times
Warren Bennis dies at 89; USC professor was expert on leadership
David Colker
AUGUST 2, 2014, 1:38 PM
(...)
“The manager has his eye on the bottom line; the leader has his eye on the horizon,” he told audiences, as reported in a 1994 Los Angeles Times profile. Another aphorism he liked to use: “The manager does things right; the leader does the right thing.”
 
Google Books
ABC of Quotes
By Vincent Thnay
Lulu Press, Inc.
2015
Pg. ?:
Leaders keep their eyes on the horizon, not just on the bottom line.
Warren G. Bennis