Yesterday, we talked about intelligence and truth. One of the points that was made was that intelligence is basically applied knowledge -- that is, it doesn't help someone if he knows a lot but doesn't apply this knowledge in his life. We also talked about how truth basically is the knowledge of unchanging principles.
An interesting parallel was drawn between knowing a gospel principle and knowing a secular principle such as grammar or mathematics -- if someone knows a gospel principle and applies it in his life, then that is often termed "obedience". Yet the action is basically the same as when someone takes a grammatical rule and uses it to string along words to make a sentence, or someone who takes two mathematical laws and uses the principles of logic to derive a third law from the two of them. In both cases, there is knowledge of a truth, and the application of that knowledge. So in a way, a person who writes a grammatical sentence is obeying a rule or an underlying principle in the same way that someone who observes a gospel principle is doing so -- or an architect who obeys certain rules in designing a structure, or (I suppose) a programmer who implements an algorithm.