KENA UPANISHAD · 2/1

यदि मन्यसे सुवेदेति दभ्रमेवापि नूनं त्वं वेत्थ ब्रह्मणो रूपम् ।
यदस्य त्वं यदस्य देवेष्वथ नु मीमांस्यमेव ते मन्ये विदितम् ॥

yadi manyase suvedeti dabhramevāpi nūnaṃ tvaṃ vettha brahmaṇo rūpam ।
yadasya tvaṃ yadasya deveṣvatha nu mīmāṃsyameva te manye viditam ॥

If thou thinkest that thou knowest It well, little indeed dost thou know the form of the Brahman. That of It which is thou, that of It which is in the gods, this thou hast to think out. I think It known.