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Phrase(s): Variety is the spice of life.
Prov. Cliché You should try many different kinds of experiences, because trying different things keeps life interesting. • I know we usually spend our summer vacation camping out, but I think we should try something different this year. Variety is the spice of life.
McGrawhill's American Idioms And Phrasal Verbs
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Diversity makes life interesting, as in Jim dates a different girl every week? variety is the spice of life, he claims. This phrase comes from William Cowper's poem, "The Task" (1785): "Variety is the very spice of life, That gives it all its flavor."
American Heritage Idioms