Thumos is a philosophy as spelled out by The Book of Thumos, also known as #ThumosBook, which is a groundbreaking book for humanity. Key ideas in #ThumosBook are called the Thumos Principles, which explain in depth, among other things, three of the most important concepts for human life: adulthood, love, and collaboration.
The First Thumos Principle is introduced by the following article:
The following lecture puts the Thumos Principles in a greater perspective: