पुरुष एवेदं विश्वं कर्म तपो ब्रह्म परामृतम् । एतद्यो वेद निहितं गुहायां सोऽविद्याग्रन्थिं विकिरतीह सोम्य ॥ १०॥ ॥ इति मुण्डकोपनिषदि द्वितीयमुण्डके प्रथमः खण्डः ॥

The Purusha alone is verily the universe, which consists of work and austerity. O my good friend, he who knows this Brahman-the Supreme and the Immortal, hidden in the cave of the heart-cuts asunder even here the knot of ignorance.