“The first evil choice or act is linked to the second; and each one to the one that follows, both by the tendency of our evil nature and by the power of habit, which holds us as by a destiny.”
As Lessing says, 'Let the devil catch you but by a single hair, and you are his forever.'
Source: A Dictionary of Thoughts, 1891, p. 152.
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Tryon Edwards 57
American theologian 1809–1894Related quotes

Attributed to Bonhoeffer on the Internet, and supposedly from Bonhoeffer: Pastor, Martyr, Prophet, Spy http://books.google.com/books?id=aG0q3X8TVpsC&pg=PA486#v=onepage (2010) by Eric Metaxas; however, there is no actual reference in that book. However, in advertising the book Metaxas does state on his site that the quote is from Bonhoeffer. http://ericmetaxas.com/books/bonhoeffer-pastor-martyr-prophet-spy/ First attributed to Bonhoeffer in Explorations 12:1 (1998), p. 3, as referenced by James Cone (2004) Theology's Great Sin: Silence in the Face of White Supremacy, Black Theology, 2:2, 139-152, footnote 1 http://dx.doi.org/10.1558/blth.2.2.139.36027
Compare "Not to Act, is to Act!" by Francis W. McPeek http://www.ergo-sum.net/pics/McPeek.jpg, The Missionary Herald at Home and Abroad, v.141-142 (1945-1946), "Missionary herald, 1945 - Congregational churches," pp.34-35 (We must realize that church inaction is a form of political action, and it is altogether negative. “Not to act, is to act.”)
Misattributed

“A pessimist is one who, when he has the choice of two evils, chooses both”
Similar quotes are found, unattributed, from as early as 1899 https://books.google.com/books?id=lC81AAAAIAAJ&pg=RA4-PA32&dq=%22two+evils%22+both+pessimist&hl=en&sa=X&ved=0CB0Q6AEwAGoVChMIuveP5uz0yAIVBVqICh0GRQQJ#v=onepage&q=%22two%20evils%22%20both%20pessimist&f=false. First clear attribution to Wilde was not until 1977 https://books.google.com/books?id=eOcWAQAAMAAJ&q=oscar+wilde+%22two+evils%22&dq=oscar+wilde+%22two+evils%22&hl=en&sa=X&ved=0CE4Q6AEwCWoVChMIjMLEuO30yAIVBpSICh0c4Qi9
Disputed

Quotes:, Autobiography of Sir Henry Morton Stanley (1909)

The Architecture of Theories (1891)
Context: The origin of things, considered not as leading to anything, but in itself, contains the idea of First, the end of things that of Second, the process mediating between them that of Third. A philosophy which emphasises the idea of the One, is generally a dualistic philosophy in which the conception of Second receives exaggerated attention: for this One (though of course involving the idea of First) is always the other of a manifold which is not one. The idea of the Many, because variety is arbitrariness and arbitrariness is repudiation of any Secondness, has for its principal component the conception of First. In psychology Feeling is First, Sense of reaction Second, General conception Third, or mediation. In biology, the idea of arbitrary sporting is First, heredity is Second, the process whereby the accidental characters become fixed is Third. Chance is First, Law is Second, the tendency to take habits is Third. Mind is First, Matter is Second, Evolution is Third.

Very often attributed to Addison, this is in fact by Hugh Blair, published in Blair's Sermons (1815), Vol. 1, pp. 196-197.
Misattributed

Source: Guide for the Perplexed (c. 1190), Part III, Ch.12
Context: The second class of evils comprises such evils as people cause to each other, when, e. g., some of them use their strength against others. These evils are more numerous than those of the first kind... they likewise originate in ourselves, though the sufferer himself cannot avert them.
Source: Dragon Magic (1972), Chapter 5, “Shui Mien Lung—Slumbering Dragon” (p. 168)

“Evil people naturally assume that you will use that power exactly as they would use it.”
Source: The Tales of Alvin Maker, Heartfire (1998), Chapter 3.