The Kotzker has many Vehrtlach checking true concepts taken too far. We all know of the Rambam about going B’derech Hamemutza. However, as with all great rules, this too can be overdone. We’ve all heard of those that complain about frumkeit or about learning most of the day.
I thought of a great Mashal: one extreme is to fast, and the other extreme is to eat all your waking hours. Therefore, the middle road is to eat for 8 hours, right? Well it depends on your sights, what is your right end and what is your left end. So, one extreme is to learn all my waking hours and the other extreme is to learn a minimal amount.
Anyhow, he is saying don’t be so proud that you think Avodas Hashem is extreme and that you are going in the middle of the road. The donkeys go in the middle of the road.
The fact that the Satmarer Rebbe said it over is proof to my interpretation.