In our ability to exercise a control over these disturbances of balance, to be developed in the future, lies one of the great hopes for a chemical perfectability of human life and nature.
"The Glands Regulating Personality"
Louis Berman, M.D.
So wofully unorganized is sociological knowledge that the meaning of progress, the meaning of "swift" and "slow" in human doing, and the limits of human perfectability, are veiled, unanswered sphinxes on the shores of science.
"The Souls of Black Folk"
W. E. B. Du Bois
In him as in his two intimates, Gallatin and Madison, there was a touch of that philosophy which colored the thought of reformers on the eve of the French Revolution, a naive confidence in the perfectability of man and the essential worthiness of his aspirations.
"Jefferson and his Colleagues A Chronicle of the Virginia Dynasty, Volume 15 In The Chronicles Of America Series"
Allen Johnson