It is not the man who is beside himself, but he who is cool and collected,--who is master of his countenance, of his voice, of his actions, of his gestures, of every part of his play,--who can work upon others at his pleasure.
Friedrich Melchior Freiherr von Grimm, Denis Diderot (1815). “Historical & Literary Memoirs and Anecdotes, Selected from the Correspondence of Baron de Grimm and Diderot with the Duke of Saxe-Gotha, and Many Other Distinguished Persons, Between the Years of 1753 and 1790”, p.68
