Who said "Unexpected obstacles often spell opportunity."?

This quote is attributed to Henrik Ibsen.

Unexpected obstacles often spell opportunity. - Henrik Ibsen

"Unexpected obstacles often spell opportunity."

Henrik Ibsen

Playwright Norwegian 1828–1906

"The strongest man in the world is he who stands most alone."

"One can never go back. Bygones are gone forever. One can only go forward."

"Liberty is the first condition for anything good."

"A thousand words will not leave so deep an impression as one deed."