Context- born into middle class family, father attorney. Was able to send locke to prestigious school and lock went to oxford where he obtained a masters. He contemplated career in church but dropped that plan. He did a degree in medicine later on. He held various positions at christ church college in oxford. 1556, life turning event here he met lord ashley the earl of shoxberry. Asked locke to work with him in london. Locke then had a change in his political views. Locke in his assosiation with lord ashley, writes an essay concerning toleration not confused with the letter concerning toleration. During lockes time in exile, he wrote a letter concerning toleration, which was later published in england, in the aftermath of the glorious revolution. 3 letters were final letters on locke concerning toleration, which made him the poster boy on the idea of toleration. First letter concerning toleration (main concern)- indifferent things: religious ceremonies.