In this quote, the speaker is emphasizing the idea that people should be informed when forming an opinion on a certain topic. This means that people should seek out accurate information about the topic first before expressing their opinion. Just because someone has an opinion does not mean it is valid or correct. To have an informed opinion, a person should first look into the subject and make sure they understand it completely before making any kind of judgement. Furthermore, no one should be uneducated or ignorant on a subject.