You are not making a good start after only one month of study are you ?. You are reading books and questioning the advice of your teacher, you would do better to put the books in the loft and just train hard in Aikido. In the 1950s I recall the great Budo teacher Kenshiro Abbe Sensei reply to being asked about `Ki` - he said " don't speak to me about Ki in Aikido until after you are Shodan ".
You may do well to heed the first part of Marc's advice
Co-author `Positive Aikido`
He's not entering a cult, he is taking up a self-development practice. Kepp your mind awake, question everything and continue reading - pay respect to your teache but do not consider everything he says as gold, that's the best way to waste time and follow false prophets.