ज्ञान-विज्ञान-तृप्तात्मा
कूट-स्थो विजितेन्द्रियः
युक्त इत्य् उच्यते योगी
सम-लोष्ट्राश्म-काञ्चनः
“A person is said to be established in self-realization and is called a yogi [or mystic] when he is fully satisfied by virtue of acquired knowledge and realization. Such a person is situated in transcendence and is self-controlled. He sees everything-whether it be pebbles, stones or gold-as the same.” (Lord Krishna, Bhagavad-gita, 6.8)