Swami Rama Tirtha was a 19th century Indian teacher of the philosophy of Vedanta. Here’s a beautiful passage on seeking heaven within.

Passage

Lo the trees of the wood are my next of kin,
And the rocks alive with what beats in me
The clay is my flesh, and the fox my skin,
I am fierce with the gadfly and sweet with the bee
The flower is naught but the bloom of my love.
And the waters run down in the tune I dream
The Sun is my flower, uphung above
I cannot die, though for ever death
Weave back and fro in the warp of me
I was never born, yet my births of breath
Are as many as waves on the sleepless sea.

Swami Rama Tirtha. In Woods of God Realization.