Quanto di più vicino mi viene in mente :
Spoiler libro 8
Cadsuane e Callandor
"It is flawed," she replied curtly, "lacking the buffer that makes other sa'angreal safe to use. And it apparently magnifies the taint, inducing wildness of the mind. So long as a man is using it, anyway. The only safe way for you to use The Sword That Is Not a Sword, the only way to use it without the risk of killing yourself, or trying to do the Light alone knows what insanity, is linked with two women, and one of them guiding the flows."
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Sometimes, the same breast that held fear, held hope.Hope of salvation and fear of destruction, from the same source.