Nietzsche speaks

a very popular error: having the courage of one’s convictions—

Rather it is a matter of having the courage for an attack on one’s convictions!!!

–Nietzsche, from Beyond Good and Evil

 

 

Another way to say it, that I read some years ago was this:

It’s not enough to have the courage of your convictions.  You have to have the courage to have your convictions challenged.