“… the finest act of seeing is necessarily always the act of not seeing something else.”

Volume 2, Ch. 1
Fiction, The Book of the Long Sun (1993–1996)

The American Leviathan: The Republic in the Machine Age (1931) co-written with William Beard, p. 39
Context: If this statement by Judge Cooley is true, and the authority for it is unimpeachable, then the theory that the Constitution is a written document is a legal fiction. The idea that it can be understood by a study of its language and the history of its past development is equally mythical. It is what the Government and the people who count in public affairs recognize and respect as such, what they think it is. More than this. It is not merely what it has been, or what it is today. It is always becoming something else and those who criticize it and the acts done under it, as well as those who praise, help to make it what it will be tomorrow.

Source: Grace for the Moment

Golden Sayings of Epictetus
Context: If you have given way to anger, be sure that over and above the evil involved therein, you have strengthened the habit, and added fuel to the fire. If overcome by a temptation of the flesh, do not reckon it a single defeat, but that you have also strengthened your dissolute habits. Habits and faculties are necessarily affected by the corresponding acts... One who has had fever, even when it has left him, is not in the same condition of health as before, unless indeed his cure is complete. Something of the same sort is true also of diseases of the mind. Behind, there remains a legacy of traces and of blisters: and unless these are effectually erased, subsequent blows on the same spot will produce no longer mere blisters, but sores. If you do not wish to be prone to anger, do not feed the habit; give it nothing which may tend to its increase. At first, keep quiet and count the days when you were not angry: 'I used to be angry every day, then every other day: next every two, next every three days!' and if you succeed in passing thirty days, sacrifice to the Gods in thanksgiving. (75).

The Analects, Chapter I, Chapter II
Context: To worship to other than one's own ancestral spirits is brown-nosing. If you see what is right and fail to act on it, you lack courage.
Variant To see what is right, and not to do it, is want of courage or of principle.

Treason (1988)

Variant: Individual capitalists, in short, behave in such a way as to threaten the conditions that permit the reproduction of the capitalist class.
Source: The Limits To Capital (2006 VERSO Edition), Chapter 6, Dynamics Of Accumulation, p. 188

Source: Fire without Fuel - The Aphorisms of Baba Hari Dass, 1986, p.41

The Philosophy of Hope https://www.marxists.org/archive/guyau/1895/hope.htm, Pages Choisies des Grands Écrivains" (1895).
Context: A child saw a butterfly poised on a blade of grass; the butterfly had been made numb by the north wind. The child plucked the blade of grass, and the living flower that was at its tip, still numb, remained attached. He returned home, holding his find in his hand. A ray of sunlight broke through, striking the butterfly’s wing, and suddenly, revived and light, the living flower flew away into the glare. All of us, scholars and workers, we are like the butterfly: our strength is made of a ray of light. Not even: of the hope of a ray. One must thus know how to hope; hope is what carries us higher and farther. “But it’s an illusion!” What do you know of this? Should we not take a step for fear that one day the earth will slide away from under our feet? Looking far into the past or the future is not the only thing; one must look into oneself. One must see there the living forces that demand to be expended, and we must act.