《公孙龙子·坚白论》
见到白色、摸到坚性都是与石联系在一起的，石头与白色及坚性渗透融合成一体，坚白石不是藏着坚、白、石这三样东西吗？所谓 自藏 究竟是什么意思呢？
曰：其白也，其坚也，而石必得以相盈，其自藏奈何？
Seeing whiteness and touching firmness are all connected with stone. Stone, whiteness, and firmness penetrate and merge into one. Isn't firm white stone concealing firmness, whiteness, and stone? What exactly does so-called "self-concealment" mean?