"I imagine there are things I wouldn't do, but I haven't been offered those recently either"

This quote by M. Emmet Walsh recommends that he has a moral code that he follows, which he is not ready to do anything that goes against his beliefs. He implies that he has actually not existed with any chances that would require him to do something he would not do, so he has not needed to make a decision about it. This suggests that he is an individual of stability, and that he is not happy to jeopardize his values for any factor. He is positive in his beliefs and is not ready to be swayed by external pressures. This quote also implies that he understands his own restrictions and is not going to take threats that could potentially result in negative consequences. He is an individual who is aware of his own limits and is not willing to cross them.