Who said "Nature is not fixed; it is alive and changing."?

This quote is attributed to Ezra Pound.

Nature is not fixed; it is alive and changing. - Ezra Pound

"Nature is not fixed; it is alive and changing."

Ezra Pound Nature

Poet Critic American 1885–1972

"Make it new."

"The natural object is always the adequate symbol."

"Poetry is a sort of inspired mathematics."

"A poet is a light and winged and holy thing."

"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."