Modern Buddhism: The Path of Compassion and Wisdom (2011)
“Back of every mistaken venture and defeat is the laughter of wisdom, if you listen.”
Incidentals (1904); this is sometimes paraphrased: "I am an idealist. I believe in everything — I am only looking for proofs."
Context: Back of every mistaken venture and defeat is the laughter of wisdom, if you listen. Every blunder behind us is giving a cheer for us, and only for those who were willing to fail are the dangers and splendors of life. To be a good loser is to learn how to win. I was sure there are ten men in me and I do not know or understand one of them. I could safely declare, I am an idealist. A Parisian cynic says "I believe in nothing. I am looking for clues." My statement would be : I believe in everything — I am only looking for proofs.
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Carl Sandburg 62
American writer and editor 1878–1967Related quotes

"Ninth Talk in Bombay, (14 March 1948) http://www.jkrishnamurti.com/krishnamurti-teachings/view-text.php?tid=270&chid=4600&w=%22What+brings+understanding+is+love%22, J.Krishnamurti Online, JKO Serial No. BO48Q1, published in The Collected Works, Vol. IV, p. 200
1940s
Context: What brings understanding is love. When your heart is full, then you will listen to the teacher, to the beggar, to the laughter of children, to the rainbow, and to the sorrow of man. Under every stone and leaf, that which is eternal exists. But we do not know how to look for it. Our minds and hearts are filled with other things than understanding of "what is". Love and mercy, kindliness and generosity do not cause enmity. When you love, you are very near truth. For, love makes for sensitivity, for vulnerability. That which is sensitive is capable of renewal. Then truth will come into being. It cannot come if your mind and heart are burdened, heavy with ignorance and animosity.

“Knowledge speaks, but wisdom listens”
Variant: Knowledge speaks, but wisdom listens.
“Defeat your defeats, and never come back your feet.”
Lahore: History and Architecture of Mughal Monuments Oxford University Press, (16 April 2016)

Source: Gargantua and Pantagruel (1532–1564)
Context: Readers, friends, if you turn these pages
Put your prejudice aside,
For, really, there's nothing here that's outrageous,
Nothing sick, or bad — or contagious.
Not that I sit here glowing with pride
For my book: all you'll find is laughter:
That's all the glory my heart is after,
Seeing how sorrow eats you, defeats you.
I'd rather write about laughing than crying,
For laughter makes men human, and courageous.

“It is the province of knowledge to speak and it is the privilege of wisdom to listen.”
Ch. 10 http://books.google.com/books?id=omwRAAAAYAAJ&q=%22It+is+the+province+of+knowledge+to+speak+and+it+is+the+privilege+of+wisdom+to+listen%22&pg=PA264#v=onepage and The Atlantic Monthly October 1872 http://books.google.com/books?id=psqcIq5UxYkC&q=%22It+is+the+province+of+knowledge+to+speak+and+it+is+the+privilege+of+wisdom+to+listen%22&pg=PA427#v=onepage
The Poet at the Breakfast Table (1872)

Harry Potter in Ch. 65 http://www.fanfiction.net/s/5782108/65/Harry_Potter_and_the_Methods_of_Rationality
Harry Potter and the Methods of Rationality (2010 - 2015)
Context: Lies propagate, that’s what I’m saying. You’ve got to tell more lies to cover them up, lie about every fact that’s connected to the first lie. And if you kept on lying, and you kept on trying to cover it up, sooner or later you’d even have to start lying about the general laws of thought. Like, someone is selling you some kind of alternative medicine that doesn’t work, and any double-blind experimental study will confirm that it doesn’t work. So if someone wants to go on defending the lie, they’ve got to get you to disbelieve in the experimental method. Like, the experimental method is just for merely scientific kinds of medicine, not amazing alternative medicine like theirs. Or a good and virtuous person should believe as strongly as they can, no matter what the evidence says. Or truth doesn’t exist and there’s no such thing as objective reality. A lot of common wisdom like that isn’t just mistaken, it’s anti-epistemology, it’s systematically wrong. Every rule of rationality that tells you how to find the truth, there’s someone out there who needs you to believe the opposite. If you once tell a lie, the truth is ever after your enemy; and there’s a lot of people out there telling lies.