Living in  the Heart

If someone says to you,
“In the fortified city of the imperishable,
our body, there is a lotus
and in this lotus a tiny space:
what does it contain that one
should desire to know it?”

You must reply:
“As vast as this space without
is the tiny space within your heart:
heaven and earth are found in it,
fire and air, sun and moon,
lightening and the constellations,
whatever belongs to you here below
and all that doesn’t,
all this is gathered in that tiny space
within your heart.”

‘ Chandogya Upanishad 8.1.2-3