+The principle of **Least Action** is a fundamental concept in [Physics](/wiki/Physics), stating that a system's evolution through time follows a path where its "action" is at an extremum. This elegant idea underpins much of [Classical Mechanics](/wiki/Classical_Mechanics) and quantum field theory, revealing nature's preference for efficiency.
+## See also
+- [Lagrangian](/wiki/Lagrangian)
+- [Hamiltonian](/wiki/Hamiltonian)
+- [Calculus of Variations](/wiki/Calculus_of_Variations)
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