Mors certa, vita incerta

Mors certa, vita incerta — "Death is certain, life is uncertain" — is a Latin expression that appears in the world of Do Androids Dream of Electric Sheep? as a piece of philosophical shorthand uttered by Hannibal Sloat, the gray, dust-eroded owner of the Van Ness Pet Hospital. The phrase crystallizes the fatalistic atmosphere of Earth after World War Terminus, where radioactive fallout has driven most of humanity to emigrate and those who remain live under the constant threat of biological degeneration and death. Sloat, a man too old to emigrate and visibly decaying from the dust, uses the expression as a grim acknowledgment of the precariousness of existence in a world where life is fragile and death is the only certainty.

Origin and Context

The expression is spoken by Hannibal Sloat to his employee John Isidore, a "chickenhead" — a human whose intelligence has been degraded by the dust. Isidore, who works as a driver for Sloat's false-animal repair business, has heard the phrase a number of times but retains only a dim notion of its meaning. The narrator notes that "if a chickenhead could fathom Latin he would cease to be a chickenhead," and Sloat himself acknowledges the truth of this observation when it is pointed out to him. The exchange highlights the intellectual hierarchy of this damaged world: Sloat, though physically eroded, still possesses the cultural literacy to deploy a classical aphorism, while Isidore, a special, can grasp only its emotional weight, not its literal sense.

Thematic Significance

Mors certa, vita incerta functions as a microcosm of the novel's central preoccupations: the certainty of death and the uncertainty of meaning in a world where the boundary between the living and the mechanical has become blurred. Sloat's use of the phrase is not merely a personal motto but a professional reality — his business deals with electric animals that simulate life but inevitably break down, and the one time a real animal is brought in, it dies. The expression also resonates with the novel's religious dimension: Wilbur Mercer's endless climb up the hill, his descent into the tomb world, and his resurrection form a cycle that mirrors the Latin phrase's juxtaposition of certain death and uncertain life. For the androids who have fled to Earth, the phrase takes on an additional irony: they are not born and do not die of old age but wear out like machines, their existence a brief, uncertain interval between manufacture and retirement.

Connection to Character and Worldview

Sloat himself embodies the philosophy of the phrase. Described as having been eroded by the dust until his features are gray, his thoughts gray, his legs spindly, and his gait unsteady, he sees the world through glasses literally dense with radioactive dirt. He has given up cleaning them, as if he has accepted that the dust is already burying him. The narrator observes that in the few years he has remaining, the dust will corrupt his other senses until only his bird-screech voice remains, and then that too will expire. This physical decay mirrors the certainty of death that the Latin phrase asserts, while Sloat's continued operation of his business — however marginal — represents the uncertain, stubborn persistence of life. The expression thus serves as a verbal emblem of the novel's vision of a world where death is the only fixed point, and everything else — identity, morality, the distinction between human and android — is subject to doubt and decay.