Who said "I am because we are; no person succeeds alone."?

This quote is attributed to Langston Hughes.

I am because we are; no person succeeds alone. - Langston Hughes

"I am because we are; no person succeeds alone."

Langston Hughes

Poet Novelist American 1901–1967

"I've known rivers ancient as the world and older than the flow of human blood in human veins."

"Hold fast to dreams, for if dreams die, life is a broken-winged bird that cannot fly."

"Life for me ain't been no crystal stair."

"I am my mother's son. I wear the colors she gave me when I was born."