Jurisprudence is the general study, or science, of the law: of the different law systems and of the way different laws interact with each other and with the society and their context.
One of the things discussed withing jurisprudence is that the law should match the society it's applied in - so the statement is correct!
Answer: (this is the actual answer)
In his opening paragraph he expresses that he has new gained confidence in his abilities. He also expresses that feels he is qualified and meets the expectations of the constitution and declaration.
Explanation: (this is just the paragraph)
Proceeding, fellow citizens, to that qualification which the constitution requires, before my entrance on the charge again conferred upon me, it is my duty to express the deep sense I entertain of this new proof of confidence from my fellow citizens at large, and the zeal with which it inspires me, so to conduct myself as may best satisfy their just expectations.