Would you like to know the secret to a happy, secure life? Listen to this lesson to learn that it is only by knowing God that we can live a successful life. See that God reveals Himself to man in His creation and that His special revelation is recorded in the Bible, the Word of God. See that the non-verbal communication from God in creation goes on continually and communicates with everyone in the world. Understand that instead of worshipping the creation, we must worship the Creator and learn His plans for the human race through the Word of God.
Caveat from Dr. Dean: In this lesson I mentioned sign language being universal. I was misinformed. There are distinct sign languages related to different human languages. Thus Russian has a distinct sign language, as does, English, French, etc.