Some help with the usefulness of philosophy?

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Bertrand Russel said, "Philosophy is to be studied, not for the sake of any definite answers to its questions, since no definite answers can, as a rule, be known to be true, but rather for the sake of the questions themselves."

Discuss the usefulness (or lack of it) of studying philosophy with reference to the statement above. Draw appropriate examples from your engagement with the subject so far as well as from your own personal experience.