The quote "Success can come to you by courageous Devotion to the task lying in front of you I can as…" is famous quote attributed to C. V. Raman (1888–1970), Indian physicist.
This is from his address to the young graduates in 1969 quoted in [Kalam, A P J Abdul, Ignited Minds: Unleashing The Power Within India, http://books.google.com/books?id=_PdboDsin90C&pg=PA28, 1 September 2010, Pearson Education India, 978-81-317-2960-1, 28–29]
1900s, A Square Deal (1903)
When Things Fall Apart: Heart Advice for Difficult Times (1997)
“We seldom think of what we have, but always of what we lack.”
Variant: We seldom speak of what we have but often of what we lack.
“We are sick today for lack of simple ideas which can help us be what we want to be.”
The Universe of Experience: A Worldview Beyond Science and Religion (1974)
quoted in Larissa MacFarquhar, "Two heads: A marriage devoted to the mind-body problem", The New Yorker (2007)
As quoted in How They Succeeded (1901) by Orison Swett Marden
Context: I do not think that there is any other quality so essential to success of any kind as the quality of perseverance. It overcomes almost everything, even nature.
(zh-TW) 非其鬼而祭之，諂也。見義不為，無勇也。
The Analects, Chapter I, Chapter II
“If you see what is right and fail to act on it, you lack courage.”
The Analects, Chapter I, Chapter II
Context: To worship to other than one's own ancestral spirits is brown-nosing. If you see what is right and fail to act on it, you lack courage.
Variant To see what is right, and not to do it, is want of courage or of principle.
