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"Self-Reliance is an essay written by American Transcendentalist philosopher and essayist, Ralph Waldo Emerson. It was first published in his 1841 collection, Essays: First Series. It contains the most solid statement of one of Emerson's repeating themes, the need for each individual to avoid conformity and false consistency, and follow his or her own instincts and ideas."

Source: http://en.wikipedia.org/wiki/Self_Reliance

"Man is his own star; and the soul that can
Render an honest and a perfect man,
Commands all light, all influence, all fate;
Nothing to him falls early or too late.
Our acts our angels are, or good or ill,
Our fatal shadows that walk by us still.
                    Epilogue to Beaumont and Fletcher's Honest Man's Fortune