Prabhupada's lecture - Śrīmad-Bhāgavatam 1.16.21 - Hawaii, January 17, 1974
So we have created a society for killing cows and eating the meat and maintaining slaughterhouse in the name of religion. This is going on. So how we can be happy? There cannot be happiness. It is not a sentiment. Therefore this is most sinful activity, meat-eating, cow killing. Most sinful activity. And you have to suffer for that. Unfortunately, these rascals, they do not know that what is the result of this sinful activity.
They think the life will go on, and there is no more life. "After finishing of this body, everything will be finished." Atheistic theory. Bhasmī-bhūtasya dehasya kutaḥ punar āgamano bhavet. Kutaḥ. "Oh, who is coming?" But that they do not know, rascals. We get information from Kṛṣṇa, tathā dehāntara-prāptiḥ: [Bg. 2.13] "Oh, you have to accept another body after finishing this body." But they are not responsible. They are so irresponsible, they do not care for the next life, the result of pious and sinful activities.