Who said "Unity requires understanding across differences."?

This quote is attributed to F.W. de Klerk.

Unity requires understanding across differences. - F.W. de Klerk

"Unity requires understanding across differences."

F.W. de Klerk Relationships

President, Apartheid Reformer South African Born 1936 (age 90)

"Negotiation and dialogue are preferable to confrontation and violence."

"Change is inevitable, but the direction of change is not."

"Leadership requires the courage to make difficult decisions."

"Freedom is not given; it must be earned and defended."

"The key to a happy marriage is communication."

"Marriage is about compromise and understanding."

"Life's greatest treasures are relationships."

"Trust is a luxury I can't afford."