Take good heed not to get attached to words as being in perfect conformity with reality, because truth is not of the letter.
Be not like the one who is enthralled with a fingertip. When someone points out something with a finger, the tip of the finger may be mistaken for the thing.
The fool is unable, even unto death, to abandon the idea that in the fingertip of words there is truth, and will not grasp ultimate reality because of his rapt clinging to words.
Be not like one who, grasping his own fingertip, sees reality there. You should rather energetically discipline yourself to discover truth itself.
—Buddha Shakyamuni, Lankavatara Sutra