Bhagavad Gita 18.35

यया स्वप्नं भयं शोकं विषदं मदमेव च |
न विमुञ्चति दुर्मेधा धृति: सा पार्थ तामसी

Translation

That unintelligent resolve is said to be determination in the mode of ignorance, in which one does not give up dreaming, fearing, grieving, despair, and conceit.