Trust is like a forest, requiring years of nourishment and care to produce its benefits, but vulnerable to careless acts. Integrity forms the roots of trust, and can be built with these practical activities.
Without trust, words spoken with the best intentions come under suspicion; with trust, even carelessly chosen words can be forgiven. Stephen M.R. Covey does a great job of unpacking the nature of trust as a way to understand how to build it.