Even theists think. The issue is whether their thinking is fallacious or not.

People seem to be centering in on Hemingway and others and not the statement, a short philosophic phrase worth looking at and giving thought to.
To others: yes, Newton believed in god, but not in his science lab where miracles had scientific explanations; and Hemingway was a flawed man, as an English major I studied him well and have many known stories - so what, good for another discussion.
Thinking men and atheism - simple thought, look for truth and science and manmade answers and not miracles handed to you.