  Classical variational principles can be deduced from quantum variational
principles via formal reparameterization of the latter. It is shown that such
reparameterization is possible without invoking any assumptions other than
classicality and without appealing to dynamical equations. As examples, first
principle variational formulations of classical point-particle and cold-fluid
motion are derived from their quantum counterparts for Schrodinger, Pauli, and
Klein-Gordon particles.
