(Srila Prabhupada dancing at Rathayatra, San Francisco, 1970)
"Be happy and make all others happy. That is Kṛṣṇa consciousness. Sarve sukhino bhavantu. That is Vedic idea. Everyone be happy. That is the benediction. Sarve sukhino bhavantu. Caitanya Mahāprabhu says also the same thing, that let this Kṛṣṇa consciousness movement be preached in every village, in every town of the world. People will be happy. That is His foretelling. So any missions, any high ideals, should be preached just to make everyone happy. Because in the material existence, there is no happiness. That is a fact. There cannot be any happiness. This place is not meant for happiness because in the Bhagavad-gītā you'll find the Lord Himself says this is a place, duḥkhālayamaśāśvatam. It is a place of miseries, this material world. And aśāśvatam, and temporary. Everything is temporary. Even if you accept, 'All right. Whatever miserable is there, I'll accept this,' that is also, has no value. Even if you accept, nature will not allow you to accept it and remain there. Aśāśvatam. You have to leave. So Kṛṣṇa says, mām upetya kaunteya duḥkhālayam aśāśvatam nāpnuvanti mahātmānaḥ saṁsiddhiṁ paramāṁ gatāḥ: (BG 8.15) 'If somebody comes to Me, then he hasn't got to return back to this miserable condition of life which is not only miserable but temporary.' So we should understand that."
(Srila Prabhupada Conversation with John Lennon, Yoko Ono and George Harrison, Tittenhurst Park, London, September 11, 1969)