This man replied "I am too old, too fat, too lazy, and too rich" by way of declining an offer to continue his popular History of England. He argued for a form of compatiblism with his idea of "liberty of spontaneity," and approached moral relativism with his view that ideas of morality derive from sentiments. He also argued that there is no proof of mental self-identity as we commonly view it just a series of perceptions and ideas. For ten points, identify his author of 
This man replied "I am too old, too fat, too lazy, and too rich" by way of declining an offer to continue his popular History of England. He argued for a form of compatiblism with his idea of "liberty of spontaneity," and approached moral relativism with his view that ideas of morality derive from sentiments. He also argued that there is no proof of mental self-identity as we commonly view it just a series of perceptions and ideas. For ten points, identify his author of A Treatise on Human Nature, an 18th Scottish philosopher who argued that we cannot prove there are necessary causal chains.
This man replied "I am too old, too fat, too lazy, and too rich" by way of declining an offer to continue his popular History of England.
David {Hume}