Learn from your mistakes and build on your successes.

I want no presidency; I want to do my duty. No denunciations here, or out of this House, can deflect me a single inch from going directly at what I aim, and that is, the good of the country. I have always acted upon it, and I will always act upon it.

A man must be big enough to admit his mistakes, smart enough to profit from them, and strong enough to correct them.

It is a fundamental rule with me not to vote for a loan or tax bill till I am satisfied it is necessary for the public service, and then not if the deficiency can be avoided by lopping off unnecessary objects of expenditure or the enforcement of an exact and judicious economy in the public disbursements.

It's much easier, after all, to learn mathematics from someone who's made a few mistakes. It's impossible to learn it from someone who always gets it right.

In 1828 we raised the duties, on an average, to nearly fifty per cent, when the debt was on the eve of being discharged, and thereby flooded the country with a revenue, when discharged, which could not be absorbed by the most lavish expenditures.