'Pass away' is a euphemism for 'die'.

“去世”是“死”的委婉语。

《牛津词典》

And the ancient thinkers all knew that matter passes away Anything that is material is going to pass away and be destroyed and be gone, the great thing about an idea is that it never need die.

古时候的思想家都知道物质是会消亡的，任何物质的东西都会消亡，被毁灭，最终消失，思想之伟大就在于它永不死亡。

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In this would where all other things die and pass away , gold, and sometimes also silver, remain.

在这个万物都会死亡或消失的世界上，惟有金子，有时还有银子，能长久存在。

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