In a Lockean view, there are really two types of ideas: complex and simple. Simple ideas are the building blocks for much more complex ideas, and “While the mind is wholly passive in the reception of simple ideas, it is very active in the building of complex ideas…” Complex ideas, therefore, can either be modes, substances, or relations. Modes are when ideas are combined in order to convey new information. For instance, David Banach gives the example of beauty as a mode. He says that it is the combination of color and form. Substances, however, are different. Substances are certain objects, that can either be dogs, cats, or tables. And relations represent the relationship between two or more ideas. In this way, Locke did, in fact, answer his own questions about ideas and humans.