(Click to enlarge photo of Srila Prabhupada)
"The devotional service cannot be checked by any material impediment. It is not conditional, that 'Because I am in this condition, I cannot execute devotional service.' No. Anyone, in any position, in any circumstances, he can become the greatest devotee of the Lord—if he desires.
sa vai puṁsāṁ paro dharmo
yato bhaktir adhokṣaje
The real aim of life is how to get satisfaction, full, complete satisfaction. And that satisfaction, complete satisfaction, can be achieved only by prosecution of devotional service. There is no other method. If you want to be happy, free from all cares and anxieties, then you have to engage yourself in devotional service of the Lord. That will make you free from all material anxieties and all material miseries.
We are all seeking after that position, how to become completely happy. Our whole struggle for existence... Anyone, in any place, any country, they are all struggling for existence, either human being or animal or birds or beasts, how to become happy. This happiness of the mind, ātmā, is only possible when we are engaged in Kṛṣṇa consciousness. That is the only remedy. There is no other alternative."
(Srila Prabhupada Lecture, Montreal, August 3, 1968)