Here is the take of Krishnamurti on Enlightenment:
Questioner: I still don’t know what you mean by enlightenment?
Krishnamurti: A state of negation. Negation is the most positive action, not positive assertion. This is a very important thing to understand. Most of us so easily accept positive dogma, a positive creed, because we want to be secure, to belong, to be attached, to depend. The positive attitude divides and brings about duality. The conflict then begins between this attitude and others. But the negation of all values, of all morality, of all beliefs, having no frontiers, cannot be in opposition to anything. A positive statement in its very definition separates, and separation is resistance. To this we are accustomed, this is our conditioning. To deny all this is not immoral; on the contrary to deny all division and resistance is the highest morality. To negate everything that man has invented, to negate all his values, ethics and gods, is to be in a state of mind in which there is no duality, therefore no resistance or conflict between opposites. In this state there are no opposites, and this state is not the opposite of something else.