So people do not understand. Therefore they are called mūḍhas. They are simply making arrangement how to become happy. It is not possible to become happy here. That's a fact. But still they are. Therefore they are called mūḍhas, rascals. Which will never be possible, and they are trying for that. You see, whole world is trying to be happy. They are discovering so many technological arts, but they are dying. They cannot. They have invented horseless carriage, having very, I mean to say, speedy carriages, but there are so many dangers. Every moment the life can go, the motor accident. It is happening in the Western country. So whatever you do for the advancement of material civilization, you are one side increasing more danger. If you did not discover these aeroplane and motorcar, then death would not have been so easier. You could live at least for some days.
But because you have discovered some facilities, your death is also very become near. So this is prakṛti. You are trying to solve the problem in one way, and the problem is becoming more dangerous and difficult by the laws of nature. That these rascals cannot find even. They continually working. There is a verse in the Śrīmad-Bhāgavatam, paśyann api na paśyati. They are so big rascals that paśyann api na paśyati: even they are seeing every moment that "All our endeavors are being baffled," still, they'll try for it. They'll try for it, again and again. Punaḥ punaś carvita-carvaṇānām [SB 7.5.30]. These things are... Punaḥ punaḥ, again and again, chewing the chewed, this is their business. Therefore they are called mūḍhas. The mūḍhas, they do not find that "All our attempt..."
Therefore the śāstra advises, "You simply make one attempt, how to advance in Kṛṣṇa consciousness. Otherwise you are not..." Only one thing. That chance you cannot get in other form of life, that a cat, dog, you do not get this.
Prabhupada's lecture - Śrīmad-Bhāgavatam 7.9.14 - Māyāpur, February 21, 1976