how does Chillingworth try to manipulatemDimmesdale into confesing?

Chillingworth tries many tactics to manipulate Dimmesdale into confessing his sin. When Chillingworth suggests that he can never cure Dimmesdale as long as the minister conceals information from him. Chillingworth points out that Dimmesdale has a "sickness of the soul" that needs to unburden his soul to "an earthly physician."