Paladin and monk dual-classing
While it is not possible to renounce further progress as a paladin
or a monk in order to pursue another profession, the opposite is not
necessarily true. From a non-conflicting profession, a human PC
can move to that of paladin or monk. For example, a lawful good
cleric with sufficiently high ability scores might decide to become a
paladin. Similarly, a thief of lawful alignment might determine that
the monk profession is now a desired occupation. In both examples,
no change in alignment occurs, and the activities of the new class do
not conflict with those of the previous class. It is not possible to take
the opposite route, since the mental determination required for
initial membership in the paladin or monk class disallows any lessening
or redirection of those disciplines. If a character begins his adventuring
career as a paladin, then a paladin he will remain (unless
his paladin status is removed for some reason related to magic,
behavior, or alignment change); and so it is also for a monk. Apply
this same line of reasoning to any other dual-class question, and you
won?t be far off the mark.