Conversations with Carl Sagan (2006) http://books.google.ca/books?id=gJ1rDj2nR3EC&pg=PA70&redir_esc=y#v=onepage&q&f=false, edited by Tom Head, p. 70 
Context: Those who raise questions about the God hypothesis and the soul hypothesis are by no means all atheists. An atheist is someone who is certain that God does not exist, someone who has compelling evidence against the existence of God. I know of no such compelling evidence. Because God can be relegated to remote times and places and to ultimate causes, we would have to know a great deal more about the universe than we do to be sure that no such God exists. To be certain of the existence of God and to be certain of the nonexistence of God seem to me to be the confident extremes in a subject so riddled with doubt and uncertainty as to inspire very little confidence indeed.
                                    
“God is a hypothesis constructed by man to help him understand what existence is all about.”
            The New Divinity (1964) 
Context: God is a hypothesis constructed by man to help him understand what existence is all about.... To say that God is ultimate reality is just semantic cheating, as well as being so vague as to become effectively meaningless... Today the god hypothesis has ceased to be scientifically tenable, has lost its explanatory value and is becoming an intellectual and moral burden to our thought. It no longer convinces or comforts, and its abandonment often brings a deep sense of relief. Many people assert that this abandonment of the god hypothesis means the abandonment of all religion and all moral sanctions. This is simply not true. But it does mean, once our relief at jettisoning an outdated piece of ideological furniture is over, that we must construct some thing to take its place.
        
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Julian Huxley 38
English biologist, philosopher, author 1887–1975Related quotes
1840s, Past and Present (1843)
                                        
                                         Entry in Tolstoy's Diary http://www.linguadex.com/tolstoy/chapter1.htm (1 November 1910) 
Context: God is the infinite ALL. Man is only a finite manifestation of Him.
Or better yet:
God is that infinite All of which man knows himself to be a finite part.
God alone exists truly. Man manifests Him in time, space and matter. The more God's manifestation in man (life) unites with the manifestations (lives) of other beings, the more man exists. This union with the lives of other beings is accomplished through love.
God is not love, but the more there is of love, the more man manifests God, and the more he truly exists...
We acknowledge God only when we are conscious of His manifestation in us. All conclusions and guidelines based on this consciousness should fully satisfy both our desire to know God as such as well as our desire to live a life based on this recognition.
                                    
                                        
                                        El hombre habla de todo y habla de todo como si el conocimiento de todo estuviese todo en él. 
Voces (1943)
                                    
                                        
                                        "Flower in the Crannied Wall" (1869) 
Context: Flower in the crannied wall,
I pluck you out of the crannies,
I hold you here, root and all, in my hand,
Little flower — but if I could understand
What you are, root and all, and all in all,
I should know what God and man is.
                                    
                                
                                    “But when a man
speeds toward his own ruin,
a god gives him help.”
                                
                                
                                
                                
                            
Source: The Persians (472 BC), line 742 (tr. Janet Lembke and C. J. Herington)
“A Man is to go about his own Business as if he had not a Friend in the World to help him in it.”
Political, Moral, and Miscellaneous Reflections (1750), Miscellaneous Thoughts and Reflections
                                        
                                        The New Divinity (1964) 
Context: God is a hypothesis constructed by man to help him understand what existence is all about.... To say that God is ultimate reality is just semantic cheating, as well as being so vague as to become effectively meaningless... Today the god hypothesis has ceased to be scientifically tenable, has lost its explanatory value and is becoming an intellectual and moral burden to our thought. It no longer convinces or comforts, and its abandonment often brings a deep sense of relief. Many people assert that this abandonment of the god hypothesis means the abandonment of all religion and all moral sanctions. This is simply not true. But it does mean, once our relief at jettisoning an outdated piece of ideological furniture is over, that we must construct some thing to take its place.