God’s Omnipotence

The truths of mathematics…were established by god and entirely depend on him, as much as do all the rest of his creatures. …you will be told that if god established these truths he would be able to change them, as a king does his laws; to which it is necessary to reply that this is correct…in general we can be quite certain that god can do whatever we are able to understand, but not that he cannot do what we are unable to understand. for it would be presumptuous to think our imagination extends as far as his power.