You Cannot Use Anything you Don't Make Yourself.....

This statement is bot true and false. When you don't have permission from the owner and when you don't properly acknowledge the author or owner then the statement is true. Not following those rules will cause you to violate the copy right laws. But the statement can be false if you follow all of the right legal procedures before using someone's work. If you want to be on the safe side your should avoid using other people's work.