The highest form of ignorance is to reject something you know nothing about. Those who cannot change their minds cannot change anything. Not to know is bad, not to wish to know is worse. Courage is a special kind of knowledge; the knowledge of how to fear what ought to be feared and how not to fear what ought not to be feared. Knowledge is power and enthusiasm pulls the switch because the essence of knowledge is, having it, to apply it; not having it, to confess your ignorance. Every mind was made for growth, for knowledge, and its nature is sinned against when it is doomed to ignorance. Today knowledge has power. It controls access to opportunity and advancement.