That is only correct if your denying atheism from an atheist's point of view, from that of a religious person an atheist is denying the existence of God
The difference being...? I know that the earth is round and evolution is a fact. Somebody who doesn't believe in these things could be said to be 'denying' their truth, but that's not so; you can only deny something you know or suspect is true.
Yet each man kills the thing he loves--
By each let this be heard...
The coward does it with a kiss,
The brave man with a sword!