"Internationalism is a community theory of society which is founded on economic, spiritual, and biological facts. It maintains that respect for a healthy development of human society and of world civilization requires that mankind be organized internationally"

In this quote, Christian Lous Lange is describing internationalism as a theory of society that is based on three crucial elements: economic, spiritual, and biological facts. He argues that in order for human society and world civilization to grow, there should be a strong emphasis on international cooperation and company. This suggests recognizing the interconnectedness of countries and interacting to promote a healthy advancement for all. Lange believes that by accepting internationalism, we can cultivate a sense of respect and understanding for different cultures and promote a more unified international community. Ultimately, he sees internationalism as a vital element of developing a better world for all.