Who said "To doubt is to begin to understand"?

This quote is attributed to Sophocles.

To doubt is to begin to understand - Sophocles

"To doubt is to begin to understand"

Sophocles Philosophy

Tragic Playwright Ancient Greece 496–406

"Wisdom brings suffering to those who possess it."

"Nobody likes the man who brings bad news."

"All that is and will be comes forth from necessity."

"To the man who is afraid everything rustles."

"I've seen the worst humanity has to offer."

"Sometimes I wonder if the world is worth saving."

"Every choice shapes our destiny."

"Order is the foundation of a good life."