This comes from the great play and movie The Browning Version,

It's quoted first in Greek, then English, who said it please,

Thank you,

Michael

I can't get anything on an origin for that, except the movie. Maybe someone else will have better luck.

"The art of teaching is tolerance. Humbleness is the art of learning"
BKS Iyengar
http://www.hinduismtoday.com/archives/2001/3-4/29_quotes.shtml

quote:

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"For the tools of learning are the same, in any and every subject; and the person who knows how to use them will, at any age, get the mastery of a new subject in half the time and with a quarter of the effort expended by the person who has not the tools at his command. To learn six subjects without remembering how they were learnt does nothing to ease the approach to a seventh; to have learnt and remembered the art of learning makes the approach to every subject an open door."
~ The Lost Tools of Learning by Dorothy Sayers
http://www.gbt.org/text/sayers.html

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Well, there's always the Latin proverb ars est celare artem, but I'd prefer to translate that as 'art lies in the concealing of art'.