詩節 2.162.12.22.32.42.52.62.72.82.92.102.112.122.132.142.152.162.172.182.192.202.212.222.232.242.252.262.272.282.292.302.312.322.332.342.352.362.372.382.392.402.412.422.432.442.452.462.472.482.492.502.512.522.532.542.552.562.572.582.592.602.612.622.632.642.652.662.672.682.692.702.712.72

The unreal hath no being; there is non-being of the real; the truth about both has been seen by the knowers of the Truth (or the seers of the Essence).

The unreal has no being, and the real never ceases to be. Those who see the truth have perceived the final nature of both.

This is one of the most philosophically dense lines in the Gita. What is unreal (asat) never comes into being, and what is real (sat) never stops being. Those who see the truth (tattva) have understood the boundary between the two. Different schools interpret sat and asat differently, as the self and the body, as the unchanging and the changing, or as the one reality and its appearances. In the dialogue, the verse gives a principle: Arjuna should not grieve over what by nature passes, nor fear for what by nature remains.