Desire for opposites hinders success
Nahj al-Balāgha|Volume 1|Book 3|Chapter 403
۴۰۳. وَقَالَ (عليه السلام): مَنْ أَوْمَأَ إِلَى مُتَفَاوِتٍ خَذَلَتْهُ الْحِيَلُ.
403. Amīr al-mu’minīn, peace be upon him, said: Whoever hankers after contraries gets no means of success.