- The rule of my life is to make business a pleasure and pleasure my business.
- Letter to Pichon, reported in Marshall Brown, Wit and Humor of Bench and Bar (1899), p. 67.
- There is a maxim, 'Never put off till tomorrow what you can do today.' It is a maxim for sluggards. A better reading of it is, 'Never do today what you can as well do tomorrow,' because something may occur to make you regret your premature action.
- Reported in Marshall Brown, Wit and Humor of Bench and Bar (1899), p. 67. Alternately reported as "Never do today what you can put off till tomorrow. Delay may give clearer light as to what is best to be done", reported in Jacob Morton Braude, The Complete Art of Public Speaking (1970), p. 84.
- Law is whatever is boldly asserted and plausibly maintained.
- Reported in Burton Stevenson, Home Book of Proverbs, Maxims and Familiar Phrases (1948).
- On that subject I am coy.
- Last words; Burr was an atheist. His last words were a response to the efforts of his friend, Reverend P.J. Van Pelt, to get Burr to state that there was a God. Reported in Holmes Moss Alexander, Aaron Burr: The Proud Pretender (1937), p. 356.