If you think, if a prisoner thinks that "I am in this cell. Let me request the superintendent of the jail to change my cell and I'll be happy," that is a mistaken idea. One cannot be happy so long he is under the prison walls. One should become free. That should be the aim of our life. So we are trying to be happy by changing the cell, by this "ism" to that "ism," by capitalism to communism, from communism to this "ism," that "ism." That will not make us happy.
-Lecture on SB 2.3.17 -- Los Angeles, July 12, 1969

युक्ताहारविहारस्य युक्तचेष्टस्य कर्मसु ।
युक्तस्वप्‍नावबोधस्य योगो भवति दु:खहा ॥ १७ ॥
He who is regulated in his habits of eating, sleeping, recreation and work can mitigate all material pains by practicing the yoga system.
-Bhagavad-Gita Chapter 6 Verse 17