Some philosophers point out that life should actually pursue two simplicity: the simplicity of material life and the simplicity of interpersonal relationships. With this two simplicity, the mind has a vast space and a beautiful tranquility. However, most modern people are in These two aspects are very complicated. The material life is the infinite pursuit of wealth, and the interpersonal relationship is the endless entanglement of interests. The two occupy almost the entire space of life. With these two kinds of complexity, modern people have Most troubles. According to the philosopher's point of view, which of the following can be derived? ? ['The mind of most modern people either has no expansive space or no wonderful tranquility.', 'Some modern people have complicated lives, but they have the vastness and tranquility of their hearts.', 'Only when it is simple in material life or interpersonal relationship, most of the troubles of modern people will not arise.', 'If it is simple in both material life and interpersonal relationships, most of the troubles of modern people will not arise.']