The original Sanskrit verse from the Bhagavad Gita that corresponds to the quote you provided is as follows:
"क्रोधाद्भवति सम्मोहः सम्मोहात्स्मृतिविभ्रमः। स्मृतिभ्रंशाद्बुद्धिनाशो बुद्धिनाशात्प्रणश्यति॥"
Transliteration: "krodhād bhavati sammohaḥ sammohāt smṛti-vibhramaḥ smṛti-bhrāṁśād buddhi-nāśo buddhi-nāśāt praṇaśyati"
This verse is from Chapter 2, Verse 63 of the Bhagavad Gita. It describes the destructive progression that starts with anger and leads to the loss of intellect and self-destruction.