How we speak with others is important, especially when we are teaching God's truth. You may not know this, but when you are defending God’s word - His truth - you are using apologetics. Humbleness is an excellent choice when speaking with others.
"Conduct yourselves with wisdom toward outsiders, making the most of the opportunity. Let your speech always be with grace, as though seasoned with salt, so that you will know how you should respond to each person."
You can find great encouragement from The Watchman's Bagpipes on Friday, May 6, 2011, Apologetics Decorum or how we are to speak to others.
Let’s all remember that we are supposed to be representing Christ whether we are apologists or those who are upset at the apologists. We should use proper courtesy and respect and do what we do in love. Love for the lost, love for those burdened with false teachings, and love for the false teachers; in this way we can perhaps affect them so that they will come to salvation, leave the legalistic or otherwise burdensome false teachings, or become a teacher who leaves his false ideas behind.
Truth without love is too hard; love without truth is too soft.
A quote from James R. Spencer