“Keynes disdained inside information — in fact, he once declared that Wall Street traders could make huge fortunes if only they would disregard their "inside" information — and his own oracles were nothing but his minute scrutiny of balance sheets, his encyclopedic knowledge of finance, his intuition into personalities, and a certain flair for trading.”

Source: War and peace (2005), p. 2

Socrates, 16.
The Lives and Opinions of Eminent Philosophers (c. 200 A.D.), Book 2: Socrates, his predecessors and followers

Source: Castle Gay (1930), Ch. 2

Source: Monetary Equilibrium (1939), p. 32

Letter to Nathaniel Hawthorne, including bits of a review of his work that he had written (c. 16 April 1851); published in Nathaniel Hawthorne and His WIfe Vol, I (1884) by Julian Hawthorne, Ch. VIII : Lenox, p. 388
Context: There is a certain tragic phase of humanity which, in our opinion, was never more powerfully embodied than by Hawthorne. We mean the tragedies of human thought in its own unbiassed, native, and profounder workings. We think that into no recorded mind has the intense feeling of the usable truth ever entered more deeply than into this man's. By usable truth, we mean the apprehension of the absolute condition of present things as they strike the eye of the man who fears them not, though they do their worst to him, — the man who, like Russia or the British Empire, declares himself a sovereign nature (in himself) amid the powers of heaven, hell, and earth. He may perish; but so long as he exists he insists upon treating with all Powers upon an equal basis. If any of those other Powers choose to withhold certain secrets, let them; that does not impair my sovereignty in myself; that does not make me tributary. And perhaps, after all, there is no secret. We incline to think that the Problem of the Universe is like the Freemason's mighty secret, so terrible to all children. It turns out, at last, to consist in a triangle, a mallet, and an apron, — nothing more! We incline to think that God cannot explain His own secrets, and that He would like a little information upon certain points Himself. We mortals astonish Him as much as He us. But it is this Being of the matter; there lies the knot with which we choke ourselves. As soon as you say Me, a God, a Nature, so soon you jump off from your stool and hang from the beam. Yes, that word is the hangman. Take God out of the dictionary, and you would have Him in the street.
There is the grand truth about Nathaniel Hawthorne. He says NO! in thunder; but the Devil himself cannot make him say yes. For all men who say yes, lie; and all men who say no,—why, they are in the happy condition of judicious, unincumbered travellers in Europe; they cross the frontiers into Eternity with nothing but a carpet-bag, — that is to say, the Ego. Whereas those yes-gentry, they travel with heaps of baggage, and, damn them! they will never get through the Custom House. What's the reason, Mr. Hawthorne, that in the last stages of metaphysics a fellow always falls to swearing so? I could rip an hour.

Google It: Total Information Awareness, 2016

Source: The Amber Spyglass

Source: Access to Inner Worlds (1990), p. 9

Quoted in Ibn Al-Mubârak, Al-Zuhd wa Al-Raqâ`iq Vol.1 p. 156.