Tracts are an extremely effective way to share the gospel in a powerful and non-threatening manner.  Please read the following excerpt on the importance of tracts:

"Salvation tracts have many advantages over a verbal witness, though we must never downplay the verbal message of the Gospel. Please consider that salvation literature: never forgets to make the intended points about the Gospel; never is too busy to do its job; never gets sick or injured; never compromises with the truth; never argues but will always boldly and unashamedly witness to every person, regardless who they are; can be reread by thousands of people over many years in many different places; speaks out its message when it is most convenient and opportune to the recipient of the tract and can be easily verified, if Scripture references are cited in it.

Salvation literature penetrates homes, prisons, hospitals, offices and foreign countries. Though you can't speak a foreign language, you can distribute salvation literature in that language and still be effectively understood for the Gospel's sake. Tracts can be passed on to one person after another and continue to bring forth salvations."