Atheism is irrational.

[dyresand]

Whatever is rational utilizes either the senses, the intellect or both.

Atheism cannot deny God by using senses. For, to deny something by the use of senses is to search the whole physical reality, just as ruling out that there's no alien is to search all that is searchable which is impossible for us humans. But God, by demonstration of His effects, shows that He is beyond physical reality. Hence, it is the more that God can't be denied by the senses.

Atheism cannot deny God by the intellect. For, whatever we can deny by the use of our intellect, must be defined, just as we deny circle things as square, for the definition of circle is different from the definition of square. But, God can't be define, because if He has definition, He can't be God, because by demonstration of His existence through His effects, He is necessarily Boundless. Hence, God can't be denied by the intellect.

Therefore, if to be rational is able to use senses and our intellect, and that God can't be denied both by the senses and intellect, then atheism is necessarily irrational.

1. Rational thought requires some intelligence minor or otherwise. 
2. No one is denying god.
3. There is no proof of your god or any god(s) for that matter outside of their book(s), scroll(s), tablet(s).
4. Believe it or not there is a high probably chance of life in the universe besides our own it can be as simple or complex as bacteria. 
5. Um... yes it can because god of the bible is a paradox. 
6. You are using your intellect now to say atheism is irrational when in fact it's clearly not and you're wrong. You are simply wrong about atheism. 
7. You are using god as a definition of Yaweh use gods named Yaweh dammit. 
8. That is the weakest...argument i have ever seen....ever..... to say through effects like what effects. Also if god exist there would be no atheists.
9. you poor little guy... your brain is the one that gives you the feeling that god is there and god loves you it's all in you're head...