Final answer:
Decius's lines in Julius Caesar represent the universal theme that things aren't always what they seem, as he suggests using flattery to influence Caesar, despite Caesar's dislike for it.
Step-by-step explanation:
The excerpt provided from Act II, Scene i of Julius Caesar significantly portrays the universal theme that things aren't always what they seem. This theme is evident as Decius claims he can sway Caesar with flattery, even though Caesar supposedly despises flatterers. The irony is that Caesar feels most flattered when he is told he is immune to flattery, revealing the deceptive power of words and manipulation. Decius's confidence in shaping Caesar's opinions and getting him to the Capitol also suggests that individuals may be easily influenced under the guise of their own perceived strengths or weaknesses.