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 work done to obtain perfumes and to recite invocations is better than the work done with precipitable gases and other spirits. - Picatrix (Andalusia, ~1000.AD)