Felix is Latin for fortunate or happy, and unlike many names built on virtue or lineage, it simply names a condition -- good luck, freely stated rather than earned through effort. The name carries a lightness that other classical names, built on duty or strength, tend to lack.
The Principles of Art are three: Reason, Sense, and Experience, but the Principles of Operations four, viz.: The Planets, The Parts of Heaven, The Fixed Stars, and the Site or Position of all those in respect of one another. - Cardan Girolamo (1501-1576)