"That the king can do no wrong is a necessary and fundamental principle of the English constitution"

This quote by William Blackstone is referring to the idea of the divine right of kings, which was a popular belief in the 17th and 18th centuries. This principle held that the king was designated by God and was therefore foolproof. This quote is recommending that this belief is a basic part of the English constitution, suggesting that it is an important part of the legal system. This means that the king is not subject to the very same laws as his topics, and is not held accountable for any wrongdoings. This idea has given that been eliminated, however it was a fundamental part of the English constitution for centuries. This quote is a pointer of the power and authority that the king held in the past, and how it was seen as an essential part of the English constitution.