What is wisdom? It is as explained in the perfection of supreme knowledge teachings: all phenomena are free from elaborations, and when the perceiving subject as well becomes equally free from elaborations, that is wisdom. In particular, the wisdom of the Buddha consists in the pacification of the elaborations and their habitual tendencies in relation to suchness. It is the inseparability of the expanse and wisdom. It is free from singularity and multiplicity, quality and qualified. It realises the non-duality of subjects and objects. In it all phenomena — saṃsāra and nirvāṇa, faults and qualities, and so on — are always undifferentiable and equal. Outside of that, there is no way to posit wisdom.

-- 9th Karmapa Wangchuk Dorje