Frag. B 7.1-2, quoted by Plato, Sophist, 237a
Source: "The Road" U.S. 1 (1938), The Book of the Dead
"The Long and Winding Road" from Let It Be (1970)
Lyrics, The Beatles
The Ethics of Belief (1877), The Duty of Inquiry
Context: Inquiry into the evidence of a doctrine is not to be made once for all, and then taken as finally settled. It is never lawful to stifle a doubt; for either it can be honestly answered by means of the inquiry already made, or else it proves that the inquiry was not complete.
"But," says one, "I am a busy man; I have no time for the long course of study which would be necessary to make me in any degree a competent judge of certain questions, or even able to understand the nature of the arguments."
Then he should have no time to believe.
(zh-TW) 孫子曰：國之上下，死生之地，存亡之道，不可不察也。
The Art of War, Chapter 1 · Detail Assessment and Planning
Source: Striking Thoughts (2000), p. 43
Song lyrics, Bob Dylan (1962), Song to Woody
A variant of part of this statement is often quoted: Just because your voice reaches halfway around the world doesn't mean you are wiser than when it reached only to the end of the bar.
RTNDA Convention Speech (1958)
Context: I have no technical advice or counsel to offer those of you who labor in this vineyard, the one that produces words and pictures. You will, I am sure, forgive me for not telling you that instruments with which you work are miraculous, that your responsibility is unprecedented or that your aspirations are frequently frustrated. It is not necessary to remind you of the fact that your voice, amplified to the degree where it reaches from one end of the country to the other, does not confer upon you greater wisdom than when your voice reached only from one end of the bar to the other. All of these things you know.
“A Bit of the Dark World” (p. 263)
Short Fiction, Night's Black Agents (1947)
