“He who seeks equity must do equity.”
Equity Jurisprudence, 1st ed. (1836), § 59.
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Joseph Story 10
US Supreme Court justice 1779–1845Related quotes

“We are now Courts of equity, and must decide the thing according to all the rights.”
Cooper v. Griffin (1892), 61 L. J. Rep. Q. B. 566.

“Equity will go no further than the law.”
Tooke v. Hollingworth (1793), 5 T. R. 225.

Anonymous (1699), 3 Salk. 213.

“A Court of equity knows its own province.”
Mayor, &c. of Southampton v. Graves (1800), 8 T. R. 592.

“Equity has not relieved against gross improvidence.”
Duke of Beaufort v. Neeld (1845), 12 CI. & F. 260.

On Nature, as quoted by Friedrich Ueberweg, History of Philosophy, from Thales to the Present Time (1885) Vol. 1, p. 35. https://books.google.com/books?id=BW5YAAAAMAAJ&pg=PA35

“I think that common law is better than equity.”
Angus v. Clifford (1891), L. J. Rep. (N. S.) 60 C. D. 455.