The concept of separating church and state is often credited to the writings of the British philosopher John Locke. According to his principle of the social contract, Locke argued that the government lacked authority in the realm of individual conscience, as this was something rational people could not cede to the government for it or others to control. For Locke, this created a natural right in the liberty of conscience, which he argued must therefore remain protected from any government authority. These views on religious tolerance and the importance of individual conscience, along with his social contract, became particularly influential in the American colonies and the drafting of the United States Constitution. "Believing with you that religion is a matter which lies solely between Man & his God, that he owes account to none other for his faith or his worship, that the legitimate powers of government reach actions only, & not opinions, I contemplate with sovereign reverence that act of the whole American people which declared that their legislature should "make no law respecting an establishment of religion, or prohibiting the free exercise thereof," thus building a wall of separation between Church & State." - Thomas Jefferson<