We ought to be able to persuade on opposite sides of a question; as also we ought in the case of arguing by syllogism: not that we should practice both, for it is not right to persuade to what is bad; but in order that the bearing of the case may not escape us, and that when another makes an unfair use of these reasonings, we may be able to solve them.
Mind is dual, it always divides things into polar opposites: the conqueror and the conquered, the observer and the observed, the object and the subject, the day and the night. It goes on dividing things which are not divided. Neither is the day divided from the night, nor is birth divided from death. They are one energy. But mind goes on dividing everything into polarities, opposites. Nothing is opposite in existence; every contradiction is only apparent. Deep down all contradictions are meeting together.
If you use your mind to study reality, you won't understand either your mind or reality. If you study reality without using your mind, you'll understand both. . . . The mind and the world are opposites, and vision arises where they meet. When your mind doesn't stir inside, the world doesn't arise outside. When the world and the mind are both transparent, this is true vision. And such understanding is true understanding.