This quote is written / told by Michael Mann somewhere between February 5, 1943 and today. He/she was a famous Director.
The author also have 3 other quotes.
"To be really great in little things, to be truly noble and heroic in the insipid details of everyday life, is a virtue so rare as to be worthy of canonization"
"Having soon discovered to be great, I must appear so, and therefore studiously avoided mixing in society, and wrapped myself in mystery, devoting my time to fasting and prayer"