The statement "Ex vero non sequitur nisi verum" translates from Latin to "From the true, it does not follow unless it is true." This phrase can be assessed based on the principles of logic.
This statement can be seen as a tautology; it essentially says that one can only derive a true conclusion from true premises. In a logical framework, this is sound reasoning since a valid argument necessitates true premises to yield a true conclusion.
So, according to logic, this statement is good. It accurately reflects the principle that valid reasoning requires truth at its foundation.