Dr. Singh: The scientists have no information that there is evolution up or down from the human platform.
Śrīla Prabhupāda: Therefore I say they are rascals. They have no knowledge, yet they still claim to be scientists. Real science is in the Bhagavad-gītā, where Kṛṣṇa says, yānti deva-vratā devān pitṝn yānti pitṛ-vratāḥ (Bg. 9.25). This means that whatever one worships in this life will determine the type of body he gets in his next life. But if one worships Kṛṣṇa, he ends the process of transmigration entirely. Yaṁ prāpya na nivartante tad dhāma: "When one goes to that supreme abode of Mine, he never returns [to this material world of birth and death]." (Bg. 8.21) Promotion to the spiritual world (saṁsiddhiṁ paramām) is the ultimate perfection of human life. Read Bhagavad-gītā; everything is there. But the scientists have no idea of this perfection; they do not even believe in the existence of the living entity apart from the gross body.
Morning Walk:May 13, 1973