english: But about four centuries before Christ, this starts ramping up very rapidly to an almost five-fold increase of books getting closer, and closer and closer to the concept of introspection.
non_english: Međutim, oko četiri veka pre Hrista, ovo počinje da se vrlo brzo pojačava do skoro petostrukog porasta knjiga koje se sve više i više približavaju konceptu introspekcije.