A Wrinkle in Time

In Chapter 7 of "A Wrinkle in Time", Charles Wallace says they cant make desicions based on fear. Do you agree?

Charles Wallace's contention was the fear clouds the mind and prevents clear thinking.  In order to fight evil, a carefull consideration of all options was necessary

Also, decisions based on fear tend to be focused more on self-preservation.  In this fight, the focus needed to be on more than just self, but on the world(s) as a whole.  Self-sacrifice might be necessary, as Charles Wallace will choose to do later.  The larger consequences need to be considered, not just what will happen to Meg, Charles Wallace, and Calvin.