1/ ... the language of love and reason
First and foremost, learning French is the pleasure of learning a beautiful, rich, melodious language, often called the language of love.
But French is also an analytical language that structures thought, develops critical thinking and helps argue a case and present different points of view - a valuable skill for discussion and negotiation.
It is the language of outstanding scientists and great philosophers, like the universalist thinkers of the 18th century Enlightenment who spread the idea of human rights throughout the world.