The retina at the back of the eye contains

Rods and Cones

Explanation:

The retina contains photoreceptors that absorb light and then transmits those signals through the optic nerve to the brain. Those photoreceptors are called rods and cones. That's how we can see and interpret colors.

you did not attach the discourse, but i assume it to be the discourse on the origin and basis of inequality among men (the original titile in french is: "discours sur l'origine et les fondements de l'inégalité parmi les hommes"), also know as "second discourse". in this discourse, jean-jacques rousseau emphasizes that private property is the basis of all inequalities.

therefore, what enabled the old regime to maintain as long as it did was private property.

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