Duṣkṛtina means very intelligent, but the intelligence is being misused in mischief-mongering. They are called duṣkṛtina. Kṛti. Kṛti means very nice brain, but duṣkṛti—the brain is used for creating misgivings. They will explain like that. But we should be very much careful not to become their victim. So although the atheists say there is no God, jagad āhur anīśvaram (BG 16.8), but we are convinced that God is the origin—janmādy asya yataḥ (SB 1.1.1)—of both matter and spirit.
So aparaspara-sambhūtam (BG 16.8), they simply explain that it is the result of combination only. Just like acid and alkali combine together. Just like soap. Soap is combination of acid and alkali The caustic soda is alkali, and the fat is acid. So you mix this acid and alkali—there is another product. This is chemical science. So the acid and alkali, they also come from the, I mean to say, life. Or if it does not come from the life, the product is made by another life. Acid and alkali does not mix together. Unless the chemist or the soap-maker brings them together and mixes, the soap does not come. So how you can say that the chemical combination is the source of life? No, that is not possible. This is right conclusion.