“Literature is the effort of man to indemnify himself for the wrongs of his condition.”

Torvald Helmer, Act I
A Doll's House (1879)

Source: Man for Himself (1947), Ch. 4 "Problems of Humanistic Ethics"

The Analects, The Doctrine of the Mean
Context: The superior man examines his heart, that there may be nothing wrong there, and that he may have no cause for dissatisfaction with himself. That wherein the superior man cannot be equaled is simply this — his work which other men cannot see.

Source: The Way of All Flesh (1903), Ch. 14

acting alone, acting in groups, acting in the United Nations, for plague and pestilence, and plunder and pollution, the hazards of nature, and the hunger of children are the foes of every nation. The earth, the sea, and the air are the concern of every nation. And science, technology, and education can be the ally of every nation. Never before has man had such capacity to control his own environment, to end thirst and hunger, to conquer poverty and disease, to banish illiteracy and massive human misery. We have the power to make this the best generation of mankind in the history of the world — or to make it the last.
1963, UN speech

Section 29
The Passionate State Of Mind, and Other Aphorisms (1955)
Context: A fateful process is set in motion when the individual is released "to the freedom of his own impotence" and left to justify his existence by his own efforts. The autonomous individual, striving to realize himself and prove his worth, has created all that is great in literature, art, music, science and technology. The autonomous individual, also, when he can neither realize himself nor justify his existence by his own efforts, is a breeding call of frustration, and the seed of the convulsions which shake our world to its foundations.
The individual on his own is stable only so long as he is possessed of self-esteem. The maintenance of self-esteem is a continuous task which taxes all of the individual's powers and inner resources. We have to prove our worth and justify our existence anew each day. When, for whatever reason, self-esteem is unattainable, the autonomous individual becomes a highly explosive entity. He turns away from an unpromising self and plunges into the pursuit of pride — the explosive substitute for self-esteem. All social disturbances and upheavals have their roots in crises of individual self-esteem, and the great endeavor in which the masses most readily unite is basically a search for pride.

Book III, Ch. 2
Essais (1595), Book III
Variant: Every man bears the whole stamp of the human condition.

as quoted by [C. Stewart Gillmor, Coulomb and the Evolution of Physics and Engineering in Eighteenth-century France, Princeton University Press, 1971, 069108095X, 255-261]