“Speech is a mirror of the soul; as a man speaks, so is he.”
Maxim 1073
Sentences, The Moral Sayings of Publius Syrus, a Roman Slave
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Publilio Siro 112
Latin writerRelated quotes
"How to Talk to a Man"
The Snake Has All the Lines (1960)

“He gave them speech, and they became souls”
Modes of Thought (1938).
1930s
Context: The mentality of mankind and the language of mankind created each other. If we like to assume the rise of language as a given fact, then it is not going too far to say that the souls of men are the gift from language to mankind. The account of the sixth day should be written: He gave them speech, and they became souls.
“So do not speak to me of souls when you have never seen one, man.”
Source: Jack of Shadows (1971), Chapter 6 (p. 63)

“He tries by a peculiar speech to speak The peculiar potency of the general”
Notes Toward a Supreme Fiction (1942), It Must Change

“He gave man speech, and speech created thought,
Which is the measure of the universe.”
Asia, Act II, sc. iv, l. 72
Prometheus Unbound (1818–1819; publ. 1820)
“Others are mirrors of one's soul.”
Zire Notes (May 2004 - December 2006)