There are no impediments to meditation. The very thought of such obstacles is the greatest impediment. - Ramana Maharshi

Of all the thoughts that rise in the mind, the thought 'I' is the first thought.

Relative knowledge pertains to the mind and not to the Self. It is therefore illusory and not permanent. Take a scientist, for instance. He formulates a theory that the Earth is round and goes on to prove it on an incontrovertible basis. When he falls asleep the whole idea vanishes; his mind is left a blank. What does it matter whether the world remains round or flat when he is asleep? So you see the futility of all such relative knowledge. One should go beyond relative knowledge and abide in the Self. Real knowledge is such experience, and not apprehension by the mind.

We see only the script and not the paper on which the script is written. The paper is there, whether the script is on it or not. To those who look upon the script as real, you have to say that it is unreal--an illusion--since it rests upon paper. The wise person looks upon both paper and script as one.