“Ina regular and constant employment the greatest result will always be gained by such a rate as allows a workman each day, or each week at the most, to recover all fatigue and recommence with an undiminished store of energy.”

Source: Principles of Scientific Management, 1911, p. 39.

Source: The Principles of Political Economy and Taxation (1821) (Third Edition), Chapter VII, On Foreign Trade, p. 81 (See also.. Karl Marx, Das Kapital,(Buch II), Chapter XX, p. 474)
Context: Under a system of perfectly free commerce, each country naturally devotes its capital and labour to such employments as are most beneficial to each. This pursuit of individual advantage is admirably connected with the universal good of the whole. By stimulating industry, by rewarding ingenuity, and by using most efficaciously the peculiar powers bestowed by nature, it distributes labour most effectively and most economically: while, by increasing the general mass of productions, it diffuses general benefit, and binds together, by one common tie of interest and intercourse, the universal society of nations throughout the civilized world.

Essay I: "The Roots of Honour," section 29.
Unto This Last (1860)
Context: “I choose my physician and my clergyman, thus indicating my sense of the quality of their work.” By all means, also, choose your bricklayer; that is the proper reward of the good workman, to be “chosen.” The natural and right system respecting all labour is, that it should be paid at a fixed rate, but the good workman employed, and the bad workman unemployed. The false, unnatural, and destructive system is when the bad workman is allowed to offer his work at half-price, and either take the place of the good, or force him by his competition to work for an inadequate sum.

Source: An Introduction To Probability Theory And Its Applications (Third Edition), Chapter II, Elements Of Combinatorial Analysis, p. 32.

2008, A World that Stands as One (July 2008)
Context: History reminds us that walls can be torn down. But the task is never easy. True partnership and true progress requires constant work and sustained sacrifice. They require sharing the burdens of development and diplomacy; of progress and peace. They require allies who will listen to each other, learn from each other and, most of all, trust each other.

Source: Peace of Soul (1949), Ch. 1, pp. 7–8
Context: The modern man is no longer a unity, but a confused bundle of complexes and nerves. He is so dissociated, so alienated from himself that he sees himself less as a personality than as a battlefield where a civil war rages between a thousand and one conflicting loyalties. There is no single overall purpose in his life. His soul is comparable to a menagerie in which a number of beasts, each seeking its own prey, turn one upon the other. Or he may be likened to a radio, that is tuned in to several stations; instead of getting any one clearly, it receives only an annoying static.If the frustrated soul is educated, it has a smattering of uncorrected bits of information with no unifying philosophy. Then the frustrated soul may say to itself: "I sometimes think there are two of me a living soul and a Ph. D." Such a man projects his own mental confusion to the outside world and concludes that, since he knows no truth, nobody can know it. His own skepticism (which he universalizes into a philosophy of life) throws him back more and more upon those powers lurking in the dark, dank caverns of his unconsciousness. He changes his philosophy as he changes his clothes. On Monday, he lays down the tracks of materialism; on Tuesday, he reads a best seller, pulls up the old tracks, and lays the new tracks of an idealist; on Wednesday, his new roadway is Communistic; on Thursday, the new rails of Liberalism are laid; on Friday, he-hears a broadcast and decides to travel on Freudian tracks: on Saturday, he takes a long drink to forget his railroading and, on Sunday, ponders why people are so foolish as to go to Church. Each day he has a new idol, each week a new mood. His authority is public opinion: when that shifts, his frustrated soul shifts with it.

II, i, 46.
Elegies

As quoted in book Thapa Politics in Nepal: With Special Reference to Bhim Sen Thapa, 1806–1839 https://books.google.com.np/books?id=7PP1yElRzIUC&dq=bhimsen+thapa&source=gbs_navlinks_s|