1.The great philosophers had arguments that they were putting forward to try to persuade us of the truths of their positions.
这些伟大的哲学家们做出了论证,来使我们相信他们观点的正确性。
3.The relationship between wealth and happiness is a constant topic that has been discussed by many philosophers of different times.
财富与幸福之间的关系是一个永恒的话题,不同时代的许多哲学家都讨论过这个话题。