all right-minded people keep out of sight what Nature has hidden and take pains to respond to Nature's demands as privately as possible
 Marcus Tullius Cicero, On Duties (44 BC). copy citation

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Author Marcus Tullius Cicero
Source On Duties
Topic pain hiding
Date 44 BC
Language English
Reference
Note Translated by Walter Miller
Weblink http://www.constitution.org/rom/de_officiis.htm

Context

“but the parts of the body that are given us only to serve the needs of Nature and that would present an unsightly and unpleasant appearance she has covered up and {127} concealed from view. Man's modesty has followed this careful contrivance of Nature's; all right-minded people keep out of sight what Nature has hidden and take pains to respond to Nature's demands as privately as possible; and in the case of those parts of the body which only serve Nature's needs, neither the parts nor the functions are called by their real names. To perform these functions — if only it be done in private — is nothing immoral;” source