Prabhupāda: They are working hard because they are hogs and dogs. There is no need of working hard. Nature's arrangement is so perfect that if you live natural life, there is no need of hard work. This tree is standing in one place; it is not at all working. How it is standing and living? It is also living entity. The birds and beasts, they have no scientific laboratory. How they are living happily? So your advanced brain means you are spoiling, you do not know how to utilize the brain. The brain wants to be utilized for searching out Kṛṣṇa, but instead of Kṛṣṇa, you are searching out ashes, that's all. Brain is being misused.