 Listed are the two most commonly available editions of the Observations on Man, both of which have been reprinted in paperback. Because the text of all editions is the same, citations in this article are to volume and proposition, rather than to page in any given edition. Users of the one-volume 1791 edition should note that the propositions are numbered consecutively throughout, so that proposition 1 in volume 2 of the 1749 edition is proposition 101. Readers referring to the 1775 abridgement should note that the propositions included in that volume are numbered consecutively in that volume, and hence do not correspond to the other editions.