al-Sharif al-Radi (d. 406 AH) · Thaqalayn library edition, reproduced verbatim
٤٨. وَقَالَ (عليه السلام): الظَّفَرُ بالْحَزْمِ، وَالْحَزْمُ بِإِجَالَةِ الرَّأْيِ، وَالرَّأْيُ بِتَحْصِينِ الْأَسْرَارِ.
48. Amīr al-mu’minīn, peace be upon him, said: Victory is by determination; determination is by the turning over of thoughts; and thoughts are formed by guarding secrets.
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