Proverbs 7

In Proverbs chapter 7 it mentions guarding the things taught to you as the apple of your eye. I believe this is saying that your convictions should be strong and when someone offends them, it is like touching the eye, immediate reflex. As soon as we hear a contradiction we know isn't in line with the Bible, we are ready to defend with verses and such. Not that we are to yell at everyone who goes cussing down the street, but rather be ready with verses to back up these convictions.