I am not bound to win, but I am bound to be true. I am not bound to succeed, but I am bound to live up to the light I have. I must stand with anybody that stands right — stand with him while he is right and part with him when he goes wrong.
Source, in full
Reported as an inscription quoting Lincoln in an English college in The Baptist Teacher for Sunday-school Workers : Vol. 36 (August 1905), p. 483. The portion beginning with "stand with anybody..." is from the 16 October 1854 Peoria speech..