“I went on to say that 'I hoped he would abide by the long-standing principle of the [intelligence community] always telling 'truth to power.”

That kind of hope is astral desire, and will take you, as it took him, through a whole book, but will not of itself do other than sustain your ability to live life from day to day.
Source: Maitreya's Mission Vol. II (1993)

2000s and attributed from posthumous publications
Context: I've been saying for a long time that I'm hoping to find intelligent life in Washington … I'm reasonably sure there must be life in this solar system, on Mars or on Europa, and other places. I think life is probably going to be ubiquitous, though we still don't have any proof of that yet — and still less, any proof of intelligent life anywhere. But I hope that will be coming in the next decade or so through radio astronomy or, perhaps, the discovery of objects in space which are obviously artificial. Astronomical engineering — that may be the other thing to look for.

"Meeting of the Minds : Buzz Aldrin Visits Arthur C. Clarke" by Andrew Chaikin (27 February 2001) http://web.archive.org/web/20010302082528/http://www.space.com/peopleinterviews/aldrin_clarke_010227.html

Source: Eat, Pray, Love

HBO Special (1985)

Though "the Bard" is often reference to William Shakespeare, Fuller here probably uses the term in a generic sense, and in tribute to the poet-philosopher she considered in some ways her mentor, Ralph Waldo Emerson, who may have made such a statement, which she elsewhere quotes as "I have witnessed many a shipwreck, yet still beat noble hearts".
Woman in the Nineteenth Century (1845)
Context: I stand in the sunny noon of life. Objects no longer glitter in the dews of morning, neither are yet softened by the shadows of evening. Every spot is seen, every chasm revealed. Climbing the dusty hill, some fair effigies that once stood for symbols of human destiny have been broken; those I still have with me show defects in this broad light. Yet enough is left, even by experience, to point distinctly to the glories of that destiny; faint, but not to be mistaken streaks of the future day. I can say with the bard,
"Though many have suffered shipwreck, still beat noble hearts."
Always the soul says to us all, Cherish your best hopes as a faith, and abide by them in action. Such shall be the effectual fervent means to their fulfilment.

May 4, 1921. Gandhi commenting on the appeal to the Amir of Afghanistan to invade British India proposed by some Muslim leaders. Quoted from B.R. Ambedkar, Pakistan or The Partition of India (1946)
1920s

"Nothing but the Truth" http://books.google.com/books?id=uW5bAAAAMAAJ&q=%22I+made+him+swear+he%27d+always+tell+me+nothing+but+the+truth+I+promised+him+I+never+would+resent+it+No+matter+how+unbearable+how+harsh+how+cruel+How+come+He+thought+I+meant+it%22, How Did I Get to be Forty & Other Atrocities (1976)

Source: Let the Great World Spin