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 ".
That is a very good advice! Practice as hard as you can, forget about useless intelectuel divagations...
"no pain, no gain' as it is said in old wise saying from Himalaya....