I miss this man. He saw everything, including "taboo" subjects like religion and politics, from a unique point of view and made us laugh at ourselves.
According to Wikipedia (where you can read more about Carlin's life and work):
Although raised as a Roman Catholic, which Carlin describes on the albums FM & AM and Class Clown, he was an atheist and often denounced the idea of a God in interviews and performances, notably with his "Religion" and "There Is No God" routines as heard in You Are All Diseased.
Carlin also joked in his first book Brain Droppings that he worshiped the Sun, one reason being that he could actually see it. He said he prayed to his friend Joe Pesci because he "looks like a guy who can get things done!"
In his HBO special Complaints and Grievances, Carlin introduced the "Two Commandments," a revised "pocket-sized" list of the Ten Commandments ending with the additional commandment of "Thou shalt keep thy religion to thyself."