"The Thousandfold Thought" is a concept from the fantasy series The Prince of Nothing by R. Scott Bakker. It refers to a profound mental state achieved by the character Kellhus, who can perceive multiple perspectives and possibilities simultaneously. This ability allows him to manipulate situations and people effectively. In the narrative, the Thousandfold Thought represents the pinnacle of Kellhus's training in the Dunyain philosophy, which emphasizes the mastery of self and understanding of others. This heightened awareness plays a crucial role in the unfolding events of the series, influencing both personal and political dynamics.