He said to me once that
...one could never know anything except through desire,
real desire,
which was not the same as greed or lust: a pure painful and primitive desire,
a longing for everything that was not in oneself,
a torment of the flesh,
that carried one beyond the limits of one's mind to other times and other places,
if one was lucky, to a place where there was no border between oneself and
one's image in the mirrror.
The Shadow Lines
by Amitav Ghosh
page 29