| Quote #4
Hero suggests that Beatrice’s pride gets in the way of valuing her suitors at their true worth. This is, again, ironic, as Beatrice is generally such an accurate observer of people and emotions. Perhaps this love-stuff is too close to her nose (and her heart) for comfort.
| Quote #5
Up to now, we could’ve believed that Beatrice loved Benedick and just wouldn’t admit it. However, what moves Beatrice about the "secret" conversation she’s just heard is the accusation that she’s scornful and prideful. Her pride is hurt at being called prideful (just like Benedick). Beatrice’s pride moves her more than any latent love for Benedick; she’s humbly willing to attempt to improve herself, which is way more cool than changing herself for a guy.
| Quote #6
Claudio isn’t only disgusted by the acts he thinks Hero has committed, but it’s clear he thinks that his own pride is wounded by almost marrying such a woman. He feels he’s been deceived about love in general, and this (perhaps more than her betrayal) is what wounds him. These words are particularly important, as they are his parting comments before leaving Hero for dead.