The fact that man learns everything by study and observation causes him to think that the knowledge of truth is also to be gained by this method. But no. Another method has to be applied in the case of truth, a method which is quite contrary to the methods we adopt when acquiring knowledge about the external world. All that which is before us, which we recognize by name and form is the opposite of what may be called ultimate truth. Therefore if it is by study that we have to search after knowledge about all that has name and form, it follows that some other means altogether has to be adopted when seeking to attain ultimate truth.