Lamed means a "guide". It also refers to the fact to teach and learn. The existence of Lamed involves a goal which we should go, but also shows the transition in which we find ourselves before coming to a new state. The fact that Lamed is the study and the sting teaches us that the study must be followed by acts, showing that what is taught is not a simple baseless theory. The three letters forming the word Lamed are the initials of lev, mevin, daat: "a heart that understands knowledge." By its central location it is the heart of the aleph-beth.