Pluris est oculatus Testis unus, quam auriti decem.

Better one eye-witness than ten who only know a thing from hearsay; or, what we see with our own eyes, is rather to be believed than what we learn only from report, for "ver y creer," "seeing is believing," and "ojos que no ven, coraçon que no llora," "what the eye doth not see, the heart doth not rue."