Every man's interest is peculiar to himself, and the aversions and desires, which result from it, cannot be supposed to affect others in a like degree.
 David Hume, An Enquiry Concerning the Principles of Morals (1751). copy citation

Context

“The more we converse with mankind, and the greater social intercourse we maintain, the more shall we be familiarized to these general preferences and distinctions, without which our conversation and discourse could scarcely be rendered intelligible to each other. Every man's interest is peculiar to himself, and the aversions and desires, which result from it, cannot be supposed to affect others in a like degree. General language, therefore, being formed for general use, must be moulded on some more general views, and must affix the epithets of praise or blame, in conformity to sentiments, which arise from the general interests of the community.” source