In Supermind knowledge in the Idea is not divorced from will in the Idea, but one with it — just as it is not different from being or substance, but is one with the being, luminous power of the substance.
This passage delivers Aurobindo’s core definition of Supermind as the plane of Real-Idea where knowledge, will, and being are intrinsically unified, in direct contrast to the mental mode in which they remain separate and derivative.
, The Life Divine, 1939thesis