My religion teacher said that there are no atheists because in order to reject God, you must first have a concept of God, and if you have a concept of God, you are not an atheist. In what way is this true, if at all? Why?

Read also:

• What happens if someone fills up their car at the pump but leaves without paying? How is this situation typically handled?
• Why doesn’t Melania Trump do some more modeling?
• What is the reason for writing X^2 as XX instead of X*X?
• Why is Reagan seen as the best president in the USA when he literally destroyed the American economy with trickle down system and was strongly against worker unions?
• Why is digital marketing important?
• Summer here, the one who debunks atheism. Isn’t it funny how atheists always say they prefer a “no-nonsense, evidence-based approach” to understanding the world, but when I bring up logical arguments for theism, they suddenly clam up?
• How was your first cuckolding experience as a husband?
• What's the most valuable lesson you've learned in life, and how has it impacted your journey so far?
• What does it mean when you dream that your mother died?
• How is it, in the USA, a country with 334 million people, the choice of President comes down to two aged men, one of whom is a liar as well as a criminal, one who appears to be on his way to dementia. Surely a democratic country can put up better?
• How do I study with focus and concentration and avoid distractions and procrastination?