Final answer:
John Locke believed that the laws of nature are the formal expression of natural rights, which include the right to life, liberty, and property.
Step-by-step explanation:
The philosopher who suggested that the laws of nature are the formal expression of natural rights was the English philosopher John Locke. In his notable work, Two Treatises of Government, Locke proposed that individuals inherently have the right to life, liberty, and property. These rights are a part of natural law and exist independent of governmental authority. According to Locke, a social contract is formed when people agree to establish a government that respects and protects these inalienable rights.