Mortimer J. Adler (1902–2001) American philosopher and educator
Source: How to Read a Book: The Classic Guide to Intelligent Reading
He that knows not what the world is, knows not where he is himself. He that knows not for what he was made, knows not what he is nor what the world is.
VIII, 52
Meditations (c. 121–180 AD), Book VIII
Mortimer J. Adler (1902–2001) American philosopher and educator
Source: How to Read a Book: The Classic Guide to Intelligent Reading
“He who knows does not speak; he who speaks does not know.”
Laozi book Tao Te Ching
Variant: Those who know, do not speak, those who speak, do not know.
Source: Tao Te Ching, Ch. 56
Manny Pacquiao (1978) Filipino boxer, basketball player, singer and politician, dancer.
Prior to The Battle of East and West: Ricky Hatton vs. Manny Pacquiao <br class="br">As quoted in "Pacquiao-Hatton Worthy of Grand Setting" http://sports.yahoo.com/box/news?slug=ro-pachat033109 Yahoo! Sports (2009-03-31)
“He, who does not know the entries, the exits will fail him.”
Muhammad al-Taqi (811–835) ninth of the Twelve Imams of Twelver Shi'ism
[Baqir Sharīf al-Qurashi, The life of Imam Muhammad al-Jawad, Wonderful Maxims and Arts, 2005]
“He who knows the world will not be too bashful. He who knows himself will not be impudent.”
James Burgh (1714–1775) British politician
The Dignity of Human Nature (1754)
Washington Gladden (1836–1918) American pastor
Source: Dictionary of Burning Words of Brilliant Writers (1895), P. 17.
“What I say to myself - who says it? Who does he say it to?”
Antonio Porchia (1885–1968) Italian Argentinian poet
Lo que me digo, ¿quién lo dice?
Voces (1943)
John of the Cross (1542–1591) Spanish mystic and Roman Catholic saint
Note to Stanza 29 part 4
Spiritual Canticle of The Soul and The Bridegroom, Notes to the Stanzas