Nature, as we often say, makes nothing in vain, and man is the only animal whom she has endowed with the gift of speech.
 Aristotle, Politics (4th century BC). copy citation

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Author Aristotle
Source Politics
Topic speech gift
Date 4th century BC
Language English
Reference
Note Translated by Benjamin Jowett
Weblink http://classics.mit.edu/Aristotle/politics.html

Context

“whom Homer denounces- the natural outcast is forthwith a lover of war; he may be compared to an isolated piece at draughts. Now, that man is more of a political animal than bees or any other gregarious animals is evident. Nature, as we often say, makes nothing in vain, and man is the only animal whom she has endowed with the gift of speech. And whereas mere voice is but an indication of pleasure or pain, and is therefore found in other animals (for their nature attains to the perception of pleasure and pain and the intimation of them to one another, and no further)” source