"I think that I just drew a lot of nourishment from the poets that I then was aware of and able to be aware of, poets like William Blake, like Emily Dickinson, like Whitman, people whose—and then later, somewhat later, Yeats, who taught me in fact that poetry could be political and still be incredibly beautiful. And on and on, because one is always reading, one is always extending one’s range into the world of poetry translated from other languages, poetry from other centuries. All of that has been very important to me."
January 1, 1970
https://en.wikiquote.org/wiki/William_Butler_Yeats