Be sure that you are right, and then go ahead. - Davy Crockett

Although our great man at the head of the nation, has changed his course, I will not change mine. … I was also a supporter of this administration after it came into power, and until the Chief Magistrate changed the principles which he professed before his election. When he quitted those principles, I quit him. I am yet a Jackson man in principles, but not in name... I shall insist upon it that I am still a Jackson man, but General Jackson is not; he has become a Van Buren man.

"The general took much pains to reply to Alexander, but didn't so much as let on that there was any such candidate as myself at all. He had been speaking for a considerable time, when a large flock of guinea-fowls came very near to where he was, and set up the most unmerciful chattering that ever was heard, for they are a noisy little brute any way. They so confused the general, that he made a stop, and requested that they might be driven away. I let him finish his speech, and then walking up to him, said aloud, "Well, colonel, you are the first man I ever saw that understood the language of fowls." I told him that he had not had the politeness to name me in his speech, and that when my little friends, the guinea-fowls, had come up and began to holler "Crockett, Crockett, Crockett," he had been ungenerous enough to stop, and drive them all away."

Be sure you're right-then go ahead.