“A transcendentalist should always engage his body, mind and self in relationship with the Supreme; he should live alone in a secluded place and should always carefully control his mind. He should be free from desires and feelings of possessiveness.”
“yogī yuñjīta satatam, ātmānaḿ rahasi sthitaḥ, ekākī yata-cittātmā, nirāśīr aparigrahaḥ”
“A transcendentalist should always engage his body, mind and self in relationship with the Supreme; he should live alone in a secluded place and should always carefully control his mind. He should be free from desires and feelings of possessiveness.”
Bhagvad Gita: Chapter 6 verse 10
http://vedabase.net/bg/6/10/en