Cliff is homeless, hungry, and desperate for food and shelter. he will do almost anything to satisfy these needs. according to abraham maslow's hierarchy, cliff will pursue:

Cliff will ignore all other needs until he satisfies his most basic needs for food and shelter. According to maslow, humans will have the tendency to fulfilled what we placed higher in the hierarchy of needs first (the one that bring the most satisfaction, in cliff's case, food and shelter) before we could move to the needs on the lower hierarchy. (such as luxury goods)