間違いを恐れてはいけません。

mistake; error; blunder; accident; mishap; trouble; improper conduct (e.g. between man and woman); indiscretion

indicates direct object of action; indicates subject of causative expression; indicates an area traversed; indicates time (period) over which action takes place; indicates point of departure or separation of action; indicates object of desire, like, hate, etc.

to fear; to be afraid of

if ... then; when; and; why don't you...?; the more (one does something); because; since