“Effectiveness relates to the accomplishment of the cooperative purpose which is social and non-personal in character. Efficiency relates to the satisfaction of individual motives and is personal in character.”

§ 3.
Linear Associative Algebra (1882)
Context: All relations are either qualitative or quantitative. Qualitative relations can be considered by themselves without regard to quantity. The algebra of such enquiries may be called logical algebra, of which a fine example is given by Boole.
Quantitative relations may also be considered by themselves without regard to quality. They belong to arithmetic, and the corresponding algebra is the common or arithmetical algebra.
In all other algebras both relations must be combined, and the algebra must conform to the character of the relations.

Adam Schaff (1970:66), as cited in: John F Schostak (2012), Maladjusted Schooling (RLE Edu L). p. 25

“Confusing ‘Character’ with ‘Temperament’”
Clearing the Ground (1986)
Context: The core in the mystery of what we call personality resides in the individual mix between character and temperament. The most successful personalities are those who achieve the best balance between the strict demands of character and the lenient tolerance of temperament. This balance is the supreme test of genuine leadership, separating the savior from the fanatic.
The human Jesus is, to my mind, the ultimate paradigm of such psychic equilibrium. He was absolutely hard on himself and absolutely tender toward others. He maintained the highest criteria of conduct for himself but was not priggish or censorious or self-righteous about those who were weaker and frailer. Most persons of strength cannot accept or tolerate weakness in others. They are blind to the virtues they do not possess themselves and are fiercely judgmental on one scale of values alone. Jesus was unique, even among religious leaders, in combining the utmost of principle with the utmost of compassion for those unable to meet his standards.
We need to understand temperament better than we do and to recognize its symbiotic relationship to character. There are some things people can do to change and some things they cannot do — character can be formed, but temperament is given. And the strong who cannot bend are just as much to be pitied as the weak who cannot stiffen.

John M. Gaus, Leonard Dupee White, and Marshall E. Dimock. Frontiers of public administration. (1936).

Person erscheint, indem sie zu andern Personen in Beziehung tritt.
I and Thou (1923)

Source: Better-World Philosophy: A Sociological Synthesis (1899), The Social Ideal, pp. 146–147

letter, 24 June 1930, to Frank Harris "To Frank Harris on Sex in Biography" Sixteen Self Sketches (1949)
1940s and later

(describing Marx’s view), p. 35.
Capitalism and Modern Social Theory (1971)

Property (1935)