"That Two Heads are Better than One".
Sketches from Life (1846)
“A man's weaknesses may intrude on his faith but they do not diminish it.”
Source: The Bourne Ultimatum
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Robert Ludlum 11
Novelist 1927–2001Related quotes

ibn Hazm's style of ending a work, in Salim al-Hassani, Ibn Hazm’s Philosophy and Thoughts on Science https://muslimheritage.com/ibn-hazm-philosophy-and-science/#_ftnref23

'Where Do We Go From Here?" as published in Where Do We Go from Here : Chaos or Community? (1967), p. 62; many statements in this book, or slight variants of them, were also part of his address Where Do We Go From Here?" which has a section below. A common variant appearing at least as early as 1968 has "Returning violence for violence multiplies violence..." An early version of the speech as published in A Martin Luther King Treasury (1964), p. 173, has : "Returning hate for hate multiplies hate..."
1960s
Context: The ultimate weakness of violence is that it is a descending spiral, begetting the very thing it seeks to destroy. Instead of diminishing evil, it multiplies it. Through violence you may murder the liar, but you cannot murder the lie, nor establish the truth. Through violence you may murder the hater, but you do not murder hate. In fact, violence merely increases hate. So it goes. … Returning hate for hate multiplies hate, adding deeper darkness to a night already devoid of stars. Darkness cannot drive out darkness: only light can do that. Hate cannot drive out hate: only love can do that.
“Faith of consciousness is freedom
Faith of feeling is weakness
Faith of body is stupidity.”
All and Everything: Beelzebub's Tales to His Grandson (1950)
“A man's strength is ultimately born of his knowledge of his own weakness …”
Source: Drenai series, Legend, Pt 1: Against the Horde, Ch. 7