Who said "The hour of change must ever be a critical hour."?

This quote is attributed to William Butler Yeats.

The hour of change must ever be a critical hour. - William Butler Yeats

"The hour of change must ever be a critical hour."

William Butler Yeats Change

Poet Playwright Irish 1865–1939

"The best way to live is to act as if you are already dead."

"Do not wait to strike till the iron is hot; but make it hot by striking."

"There are no strangers here; only friends you haven't yet met."

"How can we know the dancer from the dance?"

"Change brings new opportunities."

"Every day is a new opportunity."

"Healing doesn't mean forgetting."

"You either get better or you get bitter."