The first requisite for success is the ability to apply your physical and mental energies to one problem incessantly without growing weary.
-- Charles Caleb Colton
   
Charles Caleb Colton   Name:
Charles Caleb Colton
Type:
Writer
Nationality:
English
Birth:
1780
Death:
1832
https://www.nutquote.com/quote/Charles_Caleb_Colton