For instance, if one asks a meditative person, "Are there seven planes of existence?, he will say, "Yes it is so." But when another person says, "I have read in a book on Greek philosophy that there are nine planes of existence; can it be true?" he will answer, "Certainly." Then another one comes and says, "I think that there are only three planes", and again he will agree. He does not say this to please; he is able to see these planes as five, seven, nine, in as many forms as he likes, because he actually sees them so. Go to a beginner in music and ask how many notes there are. He will answer, seven; and perhaps he will mention the semitones besides. But if you asked of an experienced musician who has given all his life to music and has come to understand the essence of sound, "Is it not true, as the Chinese say, that there are twenty notes in the octave?" he will say, "Yes, it can be true, but when the Indians say that there are twenty-four notes in the octave, that is true too; it is how you look at it."