This is only imitation. This material sky and everything, whatever you see—all imitation, shadow. It is shadow. Just like in cinematographic picture you see the shadow of the real thing behind, similarly, this is only shadow. And in Śrīmad-Bhāgavatam it is said that janmādy asya yataḥ anvayād itarataś ca artheṣu abhijñaḥ svarāṭ, yatra tri-sargo 'mṛṣā (SB 1.1.1). This material world is a combination of matter. Just like you have seen a nice girl's doll in the showcase of the shopkeeper's exactly just like a nice, beautiful girl. But that is imitation. Imitation. Every sane man knows, "Oh, this is imitation."
So whatever we are seeing here, beautiful, they are all imitation of the real. As the doll is imitation of a beautiful girl, similarly, yasya satyatayā nityāpi satyam eva abhipadyate. Śrīdhara Svāmī says, "Because the spiritual world is real and this unreal manifestation appears to be real, appears to be real, but it is not real, we can understand reality will exist; reality will not vanquish." That is... Reality means eternal. Therefore real pleasure, that is Kṛṣṇa. The material pleasure is temporary, not actual. Therefore those who are after reality, they don't take part in this shadow pleasure. Shadow pleasure, they don't take part. So Lord Kṛṣṇa says that yaḥ sa sarveṣu bhūteṣu naśyatsu na vinaśyati. That is reality. "When everything will be vanquished, that spiritual nature will continue to remain." That remains always.