"Do not be too timid and squeamish about your actions.  All life is an experiment.  The more experiments you make the better.  What if they are a little course, and you may get your coat soiled or torn?  What if you do fail, and get fairly rolled in the dirt once or twice.  Up again, you shall never be so afraid of a tumble." 
- Ralph Waldo Emerson

Courage is important. You need courage every day.....

"Whatever you do, you need courage. Whatever course you decide upon, there is always someone to tell you that you are wrong. There are always difficulties arising that tempt you to believe your critics are right. To map out a course of action and follow it to an end requires some of the same courage that a soldier needs. Peace has its victories, but it takes brave men and women to win them."
- Ralph Waldo Emerson