From Overview:
As races become more advanced, some choose to use their growing power for conquest. Others view their role as guardians and teachers. Fortunately, the latter is true of the d’ah rien.
Long ago, the d’ah rien were a tribal race of efficient swampland hunters. As their bodies developed, so too did their minds. In time, the race developed powerful psionic might. D’Ah Rien civilizations spread throughout the swamps, gems of learning amid the mire. The d’ah rien continued to advance while other emergent races rose and fell. The d’ah rien had lesser allies during this time, but no equals. The race observed an interesting effect of this lack of peers: their own advancement had begun to slow. After much contemplation, the d’ah rien realized their advancement could only continue if others were brought up to their levels.
Today, the d’ah rien actively spread knowledge through any cultures they encounter. D’Ah Rien learning missions can be found in most metropolises and many smaller communities. The race is particularly interested in cultures relying on arcane might. The d’ah rien feel that these cultures understand self-improvement, and are ready to begin developing their minds in place of their arcane crutches.