《普罗塔戈拉》开头处,柏拉图特别写到了“家奴”。此处并非多余,而是大有深意。柏拉图通过这个“家奴”将所谓的“朋友”和“家奴”所代表的俗众与苏格拉底代表的哲学之间的裂缝很刺眼地揭示出来。而苏格拉底显然明知这个裂缝的存在,但仍要孤独而执著地作为一根刺,插入俗众的灵魂之中。这或许就是柏拉图认识到的哲学的宿命。 At the beginning of Protagoras, Plato wrote “House Slave” in particular. This is not superfluous, but profound. Through this “slavery,” Plato dazzled the cracks between the popular people represented by the so-called “friends” and the “slaves” represented by Socrates and the philosophy represented by Socrates. Socrates, apparently aware of the existence of this rift, still lonely and persistent as a thorn into the souls of the common people. This may be the fate of philosophy recognized by Plato.