quod ab initio non valet in tractu temporis non convalescit
Meaning That which was originally void does not become valid by lapse of time.
admin
de minimis non curat lex
Meaning The law does not concern itself about trifles
nemo debet esse judex in propria sua causa
Meaning No man can be a judge in his own cause
Rex non potest peccare
Meaning The king can do no wrong
Salus populi suprema lex esto
Meaning Regard for the public welfare is the highest law