Shloka 22
पुरुषे तिष्ठती बुद्धिस्त्रिषु भावेषु वर्तते । कदाचिल्लभते प्रीतिं कदाचिदनुशोचति
puruṣe tiṣṭhatī buddhis triṣu bhāveṣu vartate | kadācillabhate prītiṃ kadācid anuśocati
毗湿摩说道：当理智（buddhi）安住于人——即具身之我——它便在三种经验状态之间流转。有时获得喜悦与满足；有时又坠入忧伤与哀叹。由此可知，心的反应随缘境而起伏；应以辨别之智求得安定，而不应依赖变幻无常的情绪。
भीष्म उवाच
Educational Q&A
The intellect (buddhi) is not uniformly steady; it cycles through three experiential conditions and therefore alternates between joy (prīti) and grief (anuśoca). The ethical implication is to cultivate discernment and steadiness rather than letting conduct be driven by shifting emotional states.
In Śānti Parva, Bhīṣma instructs Yudhiṣṭhira on dharma and inner discipline. Here he describes the mind/intellect’s changing movements—sometimes pleased, sometimes sorrowful—as part of a broader teaching on self-mastery and equanimity.