Bhagavad Gītā Chapter Two verse 69

yā niśā sarvabhūtānāṃ tasyāṃ jāgarti saṃyamī |
yasyāṃ jāgrati bhūtāni sā niśā paśyato muneḥ ||

sarva - all

Commentaries and Reflections

TKV Desikachar:

What is darkness for some people is light for others.
What is light for some people is darkness for others.”