“He must be able to hear them [the counter arguments] from persons who actually believe them; who defend them in earnest, and do their very utmost for them. He must know them in their most plausible and persuasive form; he must feel the whole force of the difficulty which the true view of the subject has to encounter and dispose of; else he will never really possess himself of the portion of truth which meets and removes that difficulty.”
![“He must be able to hear them [the counter arguments]…” quote by John Stuart Mill](https://sms4smile.com/quotes/img-quotes/df8/john-stuart-mill-477_able_he-must-be-able-to-hear-them-the-counter_1955293.jpg)
