Who said "To teach is to serve humanity's highest calling."?

This quote is attributed to Étienne Bonnot de Condillac.

To teach is to serve humanity's highest calling. - Étienne Bonnot de Condillac

"To teach is to serve humanity's highest calling."

Étienne Bonnot de Condillac Work

Philosopher Psychologist French 1714–1780

"Sensation is the foundation of all our knowledge."

"We can only know what we perceive through our senses."

"The mind is shaped by experience and observation."

"Language is the instrument of thought."

"Hard work never killed anybody."

"Work with purpose and integrity."

"Hard work pays off in the end."

"A man's gotta do what a man's gotta do."