Chandogya Upanishad 7.6

'Reflection (dhyâna) is better than consideration. The earth reflects, as it were, and thus does the sky, the heaven, the water, the mountains, gods and men. Therefore those who among men obtain greatness here on earth, seem to have obtained a part of the object of reflection (because they show a certain repose of manner). Thus while small and vulgar people are always quarrelling, abusive, and slandering, great men seem to have obtained a part of the reward of reflection. Meditate on reflection.

'He who meditates on reflection as Brahman, is lord and master, as it were, as far as reflection reaches—he who meditates on reflection as Brahman.' 'Sir, is there something better than reflection?' 'Yes, there is something better than reflection.' 'Sir, tell it me.'