“The manner of the transaction was to gild over and conceal the truth; and whenever Courts of law see such attempts made to conceal such wicked deeds they will brush away the cobweb varnish and show the transactions in their true light.”

Ronald H. Coase (1988). "The Nature of the Firm: Influence." Journal of Law, Economics, and Organization 4 (No. 1, Spring): 33—47. p. 34; as cited in Eggertsson (1990; xiii)
1960s-1980s

Petrie v. Hannay (1789), 3 T. R. 422.

Source: The Principles of Political Economy and Taxation (1821) (Third Edition), Chapter VII, On Foreign Trade, p. 85

The Book of the Law (1904)

1970s, Economics for the Citizen (1978)
Context: there's the claim that this or that price is unreasonable. I used to have conversations about this claim with Mrs. Williams early on in our 44-year marriage. She'd return from shopping complaining that stores were charging unreasonable prices. Having aired her complaints, she'd ask me to go out and unload a car trunk loaded with groceries and other items. Having completed the chore, I'd resume our conversation, saying, "Honey, I thought you said the prices were unreasonable. Are you an unreasonable person? Only an unreasonable person would pay unreasonable prices." The long and short of it is that the conversation never went over well, and we both ceased discussions of reasonable or unreasonable prices. The point is that whatever price a transaction is transacted at represents a meeting of the mind of both buyer and seller. Both viewed themselves as being better off than the next alternative -- not making the transaction. That's not to say that the seller wouldn't have found a higher price more pleasing or the buyer wouldn't have been pleased with a lower price.

Original Stories from Real Life; with Conversations Calculated to Regulate the Affections, and Form the Mind to Truth and Goodness (1788; 1791)
Context: Good habits, imperceptibly fixed, are far preferable to the precepts of reason; but, as this task requires more judgment than generally falls to the lot of parents, substitutes must be sought for, and medicines given, when regimen would have answered the purpose much better. I believe those who examine their own minds, will readily agree with me, that reason, with difficulty, conquers settled habits, even when it is arrived at some degree of maturity: why then do we suffer children to be bound with fetters, which their half-formed faculties cannot break.
In writing the following work, I aim at perspicuity and simplicity of style; and try to avoid those unmeaning compliments, which slip from the tongue, but have not the least connexion with the affections that should warm the heart, and animate the conduct. By this false politeness, sincerity is sacrificed, and truth violated; and thus artificial manners are necessarily taught. For true politeness is a polish, not a varnish; and should rather be acquired by observation than admonition.

"William Gifford" http://en.wikisource.org/wiki/The_Spirit_of_the_Age/Mr._Gifford
The Spirit of the Age (1825)

Salomons v. Nissen (1788), 2 T. R. 681.