The theme of the passage relates to the theme from ode on grecian urn by

The central theme of “Ode on a Grecian Urn” is the complex nature of art. The dramatic situation—the narrator’s puzzling one-way exchange with the urn as he views the scenes painted upon it—is intended to provoke in the reader an awareness of the paradoxes inherent in all art, but especially visual art.

what the first or next guy says

answer: the risk-return relationship. generally, the higher the potential return of an investment, the higher the risk. there is no guarantee that you will actually get a higher return by accepting more risk. diversification enables you to reduce the risk of your portfolio without sacrificing potential returns.

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