Nothing to discuss. Other than the fact that the site you linked attempts to embellish the establishment clause to suit its own agenda, and quotes the "wall of separation" paragraph which DOES NOT exist in the Constitution, but rather in a series of letters by Thomas Jefferson.
I am tolerant of your desire and wish to practice Atheism. I do not wish to see you or other Atheists excluded from any part of your rights.
I am however very INTOLERANT of the attempts by organized Atheists to remove God and the Judeo-Christain principles from the government that has served us quite well for 200 years. So, if you want to quote Jefferson and the rest of the founding fathers, remember it was they who put GOD in about 90% of the documents founding this nation, and there is little if any doubt as to their intentions or to which God they referred.