Who said "The grass is the mother to the Dothraki."?

This quote is attributed to Drogo.

The grass is the mother to the Dothraki. - Drogo

"The grass is the mother to the Dothraki."

Drogo Nature

"I am the stallion who mounts the world"

"A Dothraki hears a word and takes it as a command"

"You are of my blood. That is enough"

"I will take what is mine with fire and blood"

"Nature teaches us about beauty."

"Nature teaches us patience and wisdom"

"Sometimes it snows in April."

"Every town has a soul, and Twin Peaks has a troubled one."