In brief, we have to replace dualities by unity, egoism by divine consciousness, ignorance by divine wisdom, thought by divine knowledge, weakness, struggle and effort by self-contented divine force, pain and false pleasure by divine bliss. This is called in the language of Christ bringing down the kingdom of heaven on earth, or in modern language, realising and effectuating God in the world.
Humanity is, upon earth, the form of life chosen for this human aspiration and divine accomplishment; all other forms of life either do not need it or are ordinarily incapable of it unless they change into humanity. The divine fullness is therefore the sole real aim of humanity. It has to be effected in the individual in order that it may be effected in the race.
Humanity is a mental existence in a living body; its basis is matter, its centre and instrument mind and its medium life. This is the condition of average or natural humanity.
In every human being there is concealed (avyakta) the four higher principles. Mahas, pure ideality in vijnana, is not a vyahriti but the source of the vyahritis, the bank upon which mental, vital and bodily action draw and turn its large and infinite wealth into small coin of the lower existence. Vijnana being the link between the divine state and the human animal is the door of escape for man into the supernatural or divine humanity.
Inferior mankind gravitates downward from mind towards life and body; average mankind dwells constant in mind limited by and looking towards life and body; superior mankind levitates upward either to idealised mentality or to pure idea, direct truth of knowledge and spontaneous truth of existence; supreme mankind rises to divine beatitude and from that level either goes upward to pure Sat and Parabrahman or remains to beatify its lower members and raise to divinity in itself and others this human existence.
The man who dwells in the higher or divine and now hidden hemisphere of his consciousness, having rent the veil, is the true superman and the last product of that progressive self-manifestation of God in world, Spirit out of matter, which is now called the principle of evolution.
To rise into divine existence, force, light and bliss and recast in that mould all mundane existence is the supreme aspiration of religion and the complete practical aim of Yoga. The aim is to realise God in the universe, but it cannot be done without realising God transcendent of the Universe.
Excerpt from the book Essays Divine and Human by Sri Aurobindo