“When the prison gates slam behind an inmate, he does not lose his human quality; his mind does not become closed to ideas; his intellect does not cease to feed on a free and open interchange of opinions; his yearning for self-respect does not end; nor is his quest for self-realization concluded. If anything, the needs for identity and self-respect are more compelling in the dehumanizing prison environment.”

As quoted in Book Of Happiness, by Jagdish Gupta https://books.google.co.in/books?id=H7cwBQAAQBAJ&pg=PA101&lpg=PA101&dq=Unlike+a+drop+of+water+which+loses+its+identity+when+it+joins+the+ocean,+man+does+not+lose+his+being+in+the+society+in+which+he+lives.+Man%27s+life+is+i&source=bl&ots=eVeEf_7dR3&sig=88DaiaoPeTdFtzRM73yLcZmasVg&hl=en&sa=X&ved=0CEMQ6AEwB2oVChMIh7H05PiSyAIVRNSOCh2zIABs#v=onepage&q=Unlike%20a%20drop%20of%20water%20which%20loses%20its%20identity%20when%20it%20joins%20the%20ocean%2C%20man%20does%20not%20lose%20his%20being%20in%20the%20society%20in%20which%20he%20lives.%20Man%27s%20life%20is%20i&f=false
Variant: Unlike a drop of water which loses its identity when it joins the ocean, man does not lose his being in the society in which he lives. Man's life is independent. He is born not for the development of the society alone, but for the development of his self.

National Book Award Acceptance Speech (1957)
Context: It is true that the poet does not directly address his neighbors; but he does address a great congress of persons who dwell at the back of his mind, a congress of all those who have taught him and whom he has admired; that constitute his ideal audience and his better self. To this congress the poet speaks not of peculiar and personal things, but of what in himself is most common, most anonymous, most fundamental, most true of all men. And he speaks not in private grunts and mutterings but in the public language of the dictionary, of literary tradition, and of the street. Writing poetry is talking to oneself; yet it is a mode of talking to oneself in which the self disappears; and the products something that, though it may not be for everybody, is about everybody.

Abide as the Self

dies slowly…
Muere lentamente quien no viaja, quien no lee,
quien no oye música,
quien no encuentra gracia en sí mismo.
Muere lentamente
quien destruye su amor propio,
quien no se deja ayudar...
Poem "Muere lentamente" (Dying Slowly), wrongly attributed to Pablo Neruda. See "Fake Pablo Neruda Poem Spreads on Internet" http://www.laht.com/article.asp?ArticleId=325275&CategoryId=14094 by Ana Mendoza, Latin American Herald Tribune (12 January 2009).
Misattributed
Source: Selected Poems

All Sex, All the Time.
City Journal (1998 - 2008)

Preface http://books.google.com/books?id=aniaAAAAIAAJ&q=%22No+man+who+is+occupied+in+doing+a+very+difficult+thing+and+doing+it+very+well+ever+loses+his+self-respect%22&pg=PR22#v=onepage
1910s, The Doctor's Dilemma (1911)
Variant: No man who is occupied in doing a very difficult thing, and doing it very well, ever loses his self-respect.

Address to the Swedish Academy (20 December 1954)