【正确答案】A philosopher is solely concerned with conducting dialogues with the great souls from ancient antiquity to the contemporary era. In reading books, he converses with the ancients. In writing his own books, he converses with the progeny. In delivering lectures, he converses with a multitude of young students. In contemplating, he converses with himself. He is adept at insights, penetrating into the future. He excels in speculations, speculating on the infinite. He indulges in reveries, traveling in the other world in unbounded fantasy. He abounds in sympathies, concerned about the eternal. He converses with the philosophers and the great minds in the remotest corners of the earth. In this sense, his vision extends into the infinite distance and his thoughts are connected with the past and the future. His vision and thoughts transcend all spatiotemporal boundaries whatsoever. He is great; he is immortal; because he is in permanent dialogue with the great souls of the past, the present and the future.