Sarvam khalvidam brahma
tajjalaniti santa upasita
atha khalu kratumayah puruso
yatha-kratur-asmin-loke puruso
bhavati tathetah pretya bhavati
sa kratum kurvita

-Chandogya Upanishad, 3.14.1

All this is Brahman.
(This) is born from, dissolves in, and exists in That.

Therefore, one should meditate by becoming calm.

Because a person is identified with (one’s) conviction, (therefore) just as the conviction a person has in this world, so does one become after departing from here. Therefore one should shape one’s conviction.