Isha Upanishad Verse 9
Sanskrit Verse
अन्धं तमः प्रविशन्ति येऽविद्यामुपासते ।
ततो भूय इव ते तमो य उ विद्यायां रताः ॥९॥
Transliteration
andhaṁ tamaḥ praviśanti ye’vidyāmupāsate,
tato bhūya iva te tamo ya u vidyāyāṁ ratāḥ.
Sri Aurobindo's translation
Into a blind darkness they enter who follow after the Ignorance, they as if into a greater darkness who devote themselves to the Knowledge alone.

Muni's Play