Buddha on the Ideas

While the Tathagata, in his teaching, constantly makes use of conceptions andideas about them, disciples should keep in mind the unreality of all suchconceptions and ideas. They should recall that the Tathagata, in making use ofthem in explaining the Dharma always uses them in the semblance of a raft thatis of use only to cross a river. As the raft is of no further use after the river iscrossed, it should be discarded. So these arbitrary conceptions of things andabout things should be wholly given up as one attains enlightenment.-Buddha