experiences are always of the past, 
operating on the present, 
being modified by the present 
and continuing into the future. 
all that is consciousness, 
the vast storehouse of centuries. 
it has its usefulness in mechanical living only. 
it would be absurd to deny all the scientific knowledge acquired through the long past. 
but to bring about a mutation in consciousness, 
a revolution in this whole structure, 
there must be complete emptiness. 
and that emptiness is possible only when there is the discovery, 
the actual seeing of what is false. 
then you will see, if you have gone so far, 
that emptiness itself brings about a complete revolution in consciousness: 
it has taken place. 

j. krishnamurti, 
the book of life