“When once we quit the basis of sensation, all is in the wind. To talk of immaterial existences is to talk of nothings. To say that the human soul, angels, god, are immaterial, is to say they are nothings, or that there is no god, no angels, no soul. I cannot reason otherwise: but I believe I am supported in my creed of materialism by Locke, Tracy, and Stewart.{Letter to John Adams, from Monticello, 15 August 1820}”

“I [am] obliged to recur ultimately to my habitual anodyne, "I feel: therefore I exist." I feel bodies which are not myself: there are other existencies then. I call them "matter". I feel them changing place. This gives me "motion". Where there is an absence of matter, I call it "void", or "nothing", or "immaterial space". On the basis of sensation, of matter and motion, we may erect the fabric of all the certainties we can have or need.”

“To those who believe the dead do not visit them, I say you have cataracts in your soul. I am a man of science, yet I believe in guardian angels and the haunting by ghosts.”

“I hate fallen angels. They can talk about nothing but their fall and sins.”

“Science has proved there's nothing to the talk of ghosts and spirits, no proof anything like the soul exists. And to my mind that's an argument against the existence of an omniscient force. I think people believe whatever makes living easiest, and who am I to deny someone comfort?”

“When I say that God is not a Christian, I am saying that God is not limited as Christians have made Him (It) to be. I need to say right from the outset that I no longer view God as a god or THE God, but just God. Not a He or a She, but more of an "It" -- an infinite or Ultimate Creative Intelligence, Reality, or Existence. I use capitol letters to emphasize a superiority I tend to presume upon God. Guess it's a habit with which I am comfortable.”