Sri Aurobindo
Letters of Sri Aurobindo
12. Experiences of the Inner and the Cosmic Consciousness
What you say about the different vital worlds is no doubt 
interesting and has a certain truth, but you must remember that these worlds, which are different from the true or divine vital, are full of enchantments and illusions and they present appearances of beauty which allure only to mislead or destroy. They are worlds of “Rakshasimaya” and their heavens are more dangerous than their hells. They have to be known and their powers met when need be but not accepted; our business is with the supramental and with the vital only when it is supramentalised and until then we have always to be on our guard against any lures from that other quarter. I think the worlds of which you speak are those which have a special attraction and a special danger for poets, imaginative people and some artists. There is, specially, a strain of aestheticised vital susceptibility or sentiment or even sentimentalism through which they affect the being and it is one of the things that have to be purified before one can rise to the highest poetry, art and imaginative creation.