Hume, David

"There is no vice, that is not sometimes a virtue; no virtue that is not sometimes a vice."

"The sweetness of liberty is lost without a touch of repugnance in our breast."

"Truth springs from argument amongst friends."

"Avarice, the spur of industry, is so obstinate a passion."

"The human mind is a sort of theatre, where several perceptions successively make their appearance."

"Commerce is a great civilizer."

"To a man of the least philosophical turn, there occurs a thousand difficulties with respect to the subject of causation."

"I never asserted so absurd an opinion as that anything might arise without a cause."

"Life and death are matters of no importance to an enlightened person."

"The greater part of mankind may be divided into two classes: that of shallow thinkers and that of little actors."

"An air of freedom and ease, a disregard for formality, and good humor, are the characteristics of a true gentleman."

"Where men are most sure they are right, is where they are most often wrong."

"Causation is the cement of the universe."

"No species of writing seems more difficult to success than dialogue."

"I have written on several subjects, but none of them are so much the objects of my attention as that of morals."

"One should always consider the company one is in."

"The natural obligation of every man is to regard others as on equal footing with himself."

"To oppose the torrent of scholastic philosophy requires such unusual strength."

"Few persons can be made to believe that a state of society so different from what they have seen can really be brought about."

"Money is not, properly speaking, one of the subjects of commerce."

"Beauty arises from the proportion and fitness of the parts to each other and to the whole."

"The corruption of the best is the worst."

"All the sciences and arts, when properly cultivated, contribute to the happiness of mankind."

"There is no such thing as abstract justice or injustice."

"The sweetest and most inoffensive path of life leads through the avenues of science and learning."

"Industry and frugality constitute the support of the inferior ranks of society."

"A propensity to hope and joy is real riches."

"Mankind must necessarily exist in society, and consequently must adopt the laws of nature."

"In every system of morality which I have hitherto met with, I have always remarked that the author proceeds for some time in the ordinary ways of reasoning."

"The superstitious man is miserable in every scene, every incident in life."