Lex posterior derogat priori - "Later law removes the earlier." More recent law overrules older ones on the same matter.⏎
Nemo debet esse iudex in propria - "No one shall be a judge in his own case." In the past it was thought that it included just two rules namely (1) nemo debet esse judex in propria causa (no one shall be a judge in his own case).⏎
Maleficia propositis distinguuntur - "Evil acts are distinguished from (evil) purposes" or "crimes are distinguished by evil intent." Evil acts are distinguished from evil purposes[4] crimes are distinguished by the intention[5]⏎
Lex specialis derogat legi generali - "A law governing a specific subject matter overrides a law which only governs general matters."⏎
Lex retro non agit - "The law does not operate retroactively." A law cannot make something illegal that was legal at the time it was performed. See ex post facto law.⏎