“I'm not competent to judge. But no doubt he was a great man.”
Response to a question by an agent of the US Immigration and Naturalization Service in 1954 as to what he thought of Karl Marx, often cited as an indication of his detachment from political sensibilities and the situations of the McCarthy era. He was afterwards denied a return visa for re-entering the US until 1959, after attending the International Congress of Mathematicians in Amsterdam; as quoted in The Man Who Loved Only Numbers : The Story of Paul Erdős and the Search for Mathematical Truth (1998) by Paul Hoffman, p. 128
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Paul Erdős 18
Hungarian mathematician and freelancer 1913–1996Related quotes

“I compete with myself, people will judge whether I deserve to be on the scene or not.”
January 16, 2008; Al-Jarida http://www.aljarida.com/articles/1461245935503330200/
2008

"Brilliant Disguise"
Song lyrics, Tunnel Of Love (1987)

“In living literature no person is a competent judge but of works written in his own language.”
Sketches of English Literature, Vol II, p. 36 http://books.google.com/books?id=V9AtAAAAYAAJ, as translated by Henry Colburn
Context: In living literature no person is a competent judge but of works written in his own language. I have expressed my opinion concerning a number of English writers; it is very possible that I may be mistaken, that my admiration and my censure may be equally misplaced, and that my conclusions may appear impertinent and ridiculous on the other side of the Channel.

R Jagannathan, in "Dear Priyanka, your Dad Rajiv was no angel. He let India down (2 May 2014)"

Bowing is a courtesy for the host who invites him as well drinking a cup.
Source: The Analects, Chapter III

Book I, v, 8
The Advancement of Learning (1605)
Source: The Advancement Of Learning
Context: The two ways of contemplation are not unlike the two ways of action commonly spoken of by the ancients: the one plain and smooth in the beginning, and in the end impassable; the other rough and troublesome in the entrance, but after a while fair and even. So it is in contemplation: If a man will begin with certainties, he shall end in doubts; but if he will be content to begin with doubts he shall end in certainties.