Nyaya Darshan is one of the six Vedic philosophies of the India. Its originator is Sage Akshpada Gautama, whose Nyayasutra is the oldest and most famous text of this philosophy. The means by which we get knowledge of the knowable elements are called 'justice'. In other words, the one with which a principle can be arrived at is called justice. To know the object in a real or real form is known as element knowledge.