As google stated, "Henry<span> is credited with having convinced the delegates to form a militia to defend Virginia against the British in the Revolutionary War. At the conclusion of the speech, it is reported that members of the audience shouted back, give me liberty or give me death!</span>"
I think it depends on the question, but primary source is probably more reliable because it would be the original document. For example a diary of documented events from an explorer for example would be more reliable then a website about it. Have a nice rest of your day :)