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There is an invisible strength within us; when it recognizes two opposing objects of desire, it grows stronger.

Jalāl al-Dīn Rūmī (Maulana), Jelaluddin Rumi, Kabir Helminski, Andrew Harvey (2005). “The Rumi Collection: An Anthology of Translations of Mevlâna Jalâluddin Rumi”, p.4, Shambhala Publications
There is an invisible strength within us; when it recognizes two opposing objects of desire, it grows stronger.