Can we really defend our faith?

Yesturday In our project I was the Catholic, I found myself struggling on some of the questions Gus was asking me. I pratice my faith and pray everyday, but I am not so sure that I could defend my faith free from error. I do not have a knowledge of the subject the way Mr. Cole does. Mr. Cole could make whoever questioned him embarassed by his knowledge. Where as myself on the other hand would struggle some with making the person questioninng me believe what I am saying is the truth and true goodness of Christ. So gentlemen the last thing I want to leave you with today is do you think that you can defend your faith?