Original sentence: A guru () is one who is regarded as having great knowledge, wisdom and authority in a certain area, and uses it to guide others (teacher).As a principle for the development of consciousness it leads the creation from unreality to reality, from darkness of ignorance to the light of knowledge
Edited sentence: A guru () is one who is regarded as having great knowledge, wisdom and authority in a certain area, and who uses it to guide others (teacher).As a principle for the development of consciousness it leads the creation from unreality to reality, from the darkness of ignorance to the light of knowledge