"The mind is like a muscle. When it is in use we feel very good. Understanding is not about memorizing facts, but about exploring, questioning, and discovering. Imagination is more important than knowledge. For while knowledge defines all we currently know and understand, imagination points to all we might yet discover and create. The true purpose of education is to make minds, not careers. A human being is not one in pursuit of happiness but rather in search of a reason to be happy."