“In philosophical anthropology, … where the subject is man in his wholeness, the investigator cannot content himself, as in anthropology as an individual science, with considering man as another part of nature and with ignoring the fact that he, the investigator, is himself a man and experiences this humanity in his inner experience in a way that he simply cannot experience any part of nature.”

1850s, Latter-Day Pamphlets (1850), Downing Street (April 1, 1850)
Context: In the lowest broad strata of the population, equally as in the highest and narrowest, are produced men of every kind of genius; man for man, your chance of genius is as good among the millions as among the units;—and class for class, what must it be! From all classes, not from certain hundreds now but from several millions, whatsoever man the gods had gifted with intellect and nobleness, and power to help his country, could be chosen: O Heavens, could,—if not by Tenpound Constituencies and the force of beer, then by a Reforming Premier with eyes in his head, who I think might do it quite infinitely better. Infinitely better. For ignobleness cannot, by the nature of it, choose the noble: no, there needs a seeing man who is himself noble, cognizant by internal experience of the symptoms of nobleness.

Source: The Outermost House

Second Treatise of Government, Ch. IX, sec. 123
Two Treatises of Government (1689)

The Wisdom of the World, p. 2

Credo (1965)

[2003, Survey of Metaphysics and Esoterism, World Wisdom, 220, 978-0-94153227-3]
Spiritual life, Happiness

Source: Island

Variant translation: One of the strongest motives that lead men to art and science is escape from everyday life with its painful crudity and hopeless dreariness, from the fetters of one's own ever-shifting desires. A finely tempered nature longs to escape from the personal life into the world of objective perception and thought. With this negative motive goes a positive one. Man seeks to form for himself, in whatever manner is suitable for him, a simplified and lucid image of the world, and so to overcome the world of experience by striving to replace it to some extent by this image. This is what the painter does, and the poet, the speculative philosopher, the natural scientist, each in his own way. Into this image and its formation, he places the center of gravity of his emotional life, in order to attain the peace and serenity that he cannot find within the narrow confines of swirling personal experience.
As quoted in The Professor, the Institute, and DNA (1976) by Rene Dubos; also in The Great Influenza (2004) by John M. Barry
1910s, Principles of Research (1918)
Context: Man tries to make for himself in the fashion that suits him best a simplified and intelligible picture of the world; he then tries to some extent to substitute this cosmos of his for the world of experience, and thus to overcome it. This is what the painter, the poet, the speculative philosopher, and the natural scientist do, each in his own fashion. Each makes this cosmos and its construction the pivot of his emotional life, in order to find in this way the peace and security which he cannot find in the narrow whirlpool of personal experience.