Diego Rivera said this quote

An artist is above all a human being, profoundly human to the core. If the artist can’t feel everything that humanity feels, if the artist isn’tcapable of loving until he forgets himself and sacrifices himself if necessary, if he won’t put down his magic brush and head the fightagainst the oppressor, then he isn’t a great artist.

~ Diego Rivera

I knew how one climbing the mountain of worldly success can slip down into the river below without being conscious of the descent till he is already drowning.

~ Diego Rivera

Looking back upon my work today, I think the best I have done grew out of things deeply felt, the worst from a pride in mere talent.

~ Diego Rivera

From sunrise to sunset, I was in the forest, sometimes far from the house, with my goat who watched me as a mother does a child. All the animals in the forest became my friends, even dangerous and poisonous ones. Thanks to my goat-mother and my Indian nurse, I have always enjoyed the trust of animals--a precious gift. I still love animals infinitely more than human beings.

~ Diego Rivera