I can see how it might be possible for a man to look down upon the earth and be an atheist, but I cannot conceive how a man could look up into the heavens and say there is no God.
Nothing is so high and above all danger that is not below and in the power of God.
[Lat., Nihil ita sublime est, supraque pericula tendit
Non sit ut inferius suppositumque deo.]
Though it is possible to utter words only with the intention to fulfill the will of God, it is very difficult not to think about the impression which they will produce on men and not to form them accordingly. But deeds you can do quite unknown to men, only for God. And such deeds are the greatest joy that a man can experience.
I know of no religion or sect that has done or is doing without a house of God, variously described as a temple, a mosque, a church, a synagogue or agiary.