Poise is a question of spirit controlling flesh, heart controlling attitude.

Self-poise is an acrobatic feat, when a person, not loaded at the heels, undertakes trout-fishing from a birch.

Poise being the control of our Sympathy and Knowledge, it implies a possession of these attributes, for without having Sympathy and Knowledge you have nothing to control but your physical body.

Poise is the strength of body and strength of mind to control your Sympathy and your Knowledge.