Sitting on the Fence
From Cassiopedia
This means a state of indecision where esoteric information is not applied and one effectively lives in an inner contradiction.
The dictum that one cannot serve two masters refers to this same thing. Also, if one literally sits on the fence one is likely to fall and anyhow be in an unstable and uncomfortable situation whose main feature is lack of advance. Procrastination, wasting of energy on circular internal debates and frustration are typical of this. Also a certain excessive skepticism or confusion of spiritual and material concepts, such as dwelling on proofs of things which cannot be proven within the student's current level of being, understanding or experience is characteristic of sitting on the fence. This often tends in the direction of decreased valuation of spiritual concepts and leads away from the Work.