In these lines from "The Merchant of Venice," Shakespeare explores the theme of deception through appearances. He suggests that external appearances often mislead people, making it difficult to discern true character. The "outward shows" can mask the reality beneath, indicating that even the most corrupt pleas in law can be made palatable with a pleasant demeanor. This deceit extends beyond legal matters to religion, where erroneous beliefs can be disguised by a sincere façade, emphasizing that society often values appearances over the truth.

Shakespeare's commentary reveals that even simple vices have the capability to present themselves as virtuous. This highlights the idea that humanity is easily swayed by outward presentations rather than the inner reality. The text critiques how society can be blinded by superficial charm and eloquence, neglecting to see the underlying flaws. Ultimately, the playwright warns of the dangers of being deceived by attractive exteriors, urging a deeper examination of moral integrity beyond mere appearances.