Imprimatur
← The great ideas

Sense

Key terms
What sense is
Its powers
Its knowledge
Beyond the senses

Bodily motion

How does a thing out there become a sight, a sound or a smell in here? Sense is the power by which living beings perceive things through the body, and some explain it by something travelling from the object to the organ. These readings ask what happens physically when we perceive.

2 readings

Book IV of Lucretius’s On the Nature of Things, in Leonard’s verse translation, treats sight and the other senses according to the physics of Epicurus. The poet speaks of “effigies of things” and “tenuous shapes” sent from the surfaces of bodies, and compares them to “films” or a “rind”. The passage stands under “Key terms” for the account of how things are seen.

Part I of Leviathan, chapter 1, “Of Sense”, begins the book of 1651 with the account of thought as it arises in the human being. Hobbes names “the cause of Sense” as the “Externall Body, or Object”, which “presseth the organ proper to each Sense”. The passage stands under “Key terms” as a mechanical statement of what sense is.