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Wikipedia
Voluntas (journal)
VOLUNTAS: International Journal of Voluntary and Nonprofit Organizations is a peer-reviewed academic journal covering research on the third sector. It is the official journal of the International Society for Third-Sector Research. It was established in 1990 with Helmut Anheier and Martin Knapp as its founding editors-in-chief. Its current editors are Ruth Simsa (University of Vienna, Vienna, Austria) & Taco Brandsen (Radboud University, Nijmegen, the Netherlands).
Usage examples of "voluntas".
If he had to travel the last 50 kilometres of his journey on foot, then fiat voluntas tua.