Probably we'll really need a professional psychologist-philosopher in order to grasp what science can tell us about current concepts on intelligence. We can start with Wikipedia's:
Intelligence is a property of mind that encompasses many related abilities, such as the capacities to reason, plan, solve problems, think abstractly, comprehend ideas and language, and learn. There are several ways to define intelligence. In some cases intelligence may include traits such as creativity, personality, character, knowledge, or wisdom. However other psychologists prefer not to include these traits in the definition of intelligence.
Still I'd like to point out that we've got at least two types of this quality that can be distinguished well. First is classical and traditional intelligence that is usually trainable and can be "measured" in an IQ test. And yet we miss something. This is the so called emotional intelligence that I consider pretty important and much closer to the aspects of spirituality and even ethics.
Here are some links with more to read on types of intelligence:
http://en.wikipedia.org/wiki/Intelligence_(trait)
http://encyclopedia.thefreedictionary.c ... elligence+So I think both are equally important sides of one quality of advanced living organisms like humans.