Who said "The unity of mankind is not an ideal, but a fact."?

This quote is attributed to Hugo Grotius.

The unity of mankind is not an ideal, but a fact. - Hugo Grotius

"The unity of mankind is not an ideal, but a fact."

Hugo Grotius Relationships

Jurist Political Theorist Dutch 1583–1645

"War is the kingdom of accident."

"He who wishes to be obeyed must know how to command."

"Good faith is the foundation of justice."

"Fear is the parent of cruelty."

"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."