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There were two brothers called Both and Either; perceiving Either was a good, understanding, busy fellow, and Both a silly fellow and good for little, Philip said, "Either is both, and Both is neither.

Plutarch (1871). “Plutarch's Morals”, p.195
There were two brothers called Both and Either; perceiving Either was a good, understanding, busy fellow, and Both a silly fellow and good for little, Philip said, Either is both, and Both is neither.