Simon Greenleaf

But if, on the other hand, we should be justified in rejecting it, if there testified on oath, then, supposing our rules of evidence to be sound, we may be excused if we hesitate elsewhere to give it credence.

By competent evidence, is meant such as the nature of the thing to be proved requires; and by satisfactory evidence, is meant that amount of proof, which ordinarily satisfies an unprejudiced mind, beyond any reasonable doubt.