Francis Crick — "Our brains are machines."
Our brains are machines.
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Understanding this quote
What it means
The mind is not a mystical or supernatural entity but a physical system whose operations can be explained entirely by the biology, chemistry, and electrical activity of the brain. Thoughts, feelings, memories, and consciousness itself emerge from neurons firing and molecules interacting, just like outputs from any mechanical or computational device. Understanding the mind, therefore, is a problem of decoding hardware and circuitry rather than appealing to a soul or non-physical force.
Relevance to Francis Crick
Crick spent the second half of his career hunting the neural basis of consciousness at the Salk Institute, co-authoring the 'astonishing hypothesis' that a person is nothing more than a pack of neurons. A lifelong atheist and reductionist, he treated biology as solvable physics, an attitude that drove him from physics into molecular biology and ultimately into neuroscience. The quote distills his conviction that even subjective experience yields to mechanistic dissection.
The era
Crick worked from the 1950s through 2004, an era when molecular biology cracked DNA, computers reframed cognition as information processing, and PET and fMRI began imaging living brains. Cognitive science, AI, and neuroscience were converging on a computational view of mind, while debates raged with dualists, theologians, and humanists who insisted consciousness required something beyond matter. Crick's mechanistic framing was both a scientific bet and a deliberate cultural provocation against vitalism.
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