Ralph Waldo Emerson (1803–1882) American philosopher, essayist, and poet
1830s, The American Scholar http://www.emersoncentral.com/amscholar.htm (1837)
As A Man Thinketh (1902)
Variant: Mind is the Master Power that molds and makes, And we are mind. And ever more we take the tool of thought, and shaping what we will, bring forth a thousand joys, or a thousand ills. We think in secret, and it comes to pass, environment, is but our looking glass.
Ralph Waldo Emerson (1803–1882) American philosopher, essayist, and poet
1830s, The American Scholar http://www.emersoncentral.com/amscholar.htm (1837)
Annie Besant (1847–1933) British socialist, theosophist, women's rights activist, writer and orator
Source: https://theosophy.world/sites/default/files/ebooks/Annie%20Besant-In-The-Outer-Court.pdf In the Outer Court, 1895, p. 60
William Makepeace Thackeray book The History of Henry Esmond
Bk. II, ch. 1.
The History of Henry Esmond (1852)
Source: The History of Henry Esmond, Esq.
“The mind of man is a thousand times more beautiful than the earth on which he dwells.”
William Wordsworth (1770–1850) English Romantic poet
Eric Metaxas (1963) American journalist
Source: Amazing Grace: William Wilberforce and the Heroic Campaign to End Slavery
Christian D. Larson (1874–1962) Prolific author of metaphysical and New Thought books
Source: Your Forces and How to Use Them (1912), p. 284
Charles Cooley (1864–1929) American sociologist
Source: Human Nature and the Social Order, 1902, p. 111