As the wise bear.
The soul which is not moved,
The soul that with a strong and constant calm
Takes sorrow and takes joy indifferently,
Lives in the life undying!

- Gita. 2.15

That which is Can never cease to be;
That which is not Will not exist.
To see this truth of both
Is theirs who part essence from accident,
Substance from shadow.

- Gita. 2.16