Answer:
Franklin Delano Roosevelt.
Step-by-step explanation:
He said this as a governor of New York, according to the New York Times (1932), the complete quotation is:
The Presidency is not merely an administrative office. That’s the least of it. It is more than an engineering job, efficient or inefficient. It is pre-eminently a place of moral leadership. All our great Presidents were leaders of thought at times when certain historic ideas in the life of the nation had to be clarified.