How to be a strong atheist in a rather straightforward way

[Purple Rabbit]

"What then, brethren, shall we say of God? For if thou hast been able to understand what thou wouldest say, it is not God. If thou hast been able to comprehend it, thou hast comprehended something else instead of God. If thou hast been able to comprehend him as thou thinkest, by so thinking thou hast deceived thyself. This then is not God, if thou hast comprehended it; but if this be God, thou has not comprehended it."

—St. Augustine