Bhagavad Gita 5.16

Surely, wisdom is like the sun, revealing the supreme truth to those whose ignorance has been dispelled by the wisdom of the Self.

ज्ञानेन तु तदज्ञानं येषां नाशितमात्मनः।
तेषामादित्यवज्ज्ञानं प्रकाशयति तत्परम्॥

jñānena tu tadajñānaṃ yeṣāṃ nāśitamātmanaḥ|
teṣāmādityavajjñānaṃ prakāśayati tatparam||

English translation (above): Shri Purohit Swami (1935), public domain. Sanskrit text via github.com/gita/gita (Unlicense).