The correct offensive and defensive technical application of the following principles:
Timing : the choice, judgment or control of when something should be done; the regulation or occurrence, pace or co-ordiantion to achieve a desired effect.
Momentum :the quantity of motion of a moving object, equal to the product of mass and velocity, impetus gained by movement or progress.
Leverage: improved mechanical efficiency or advanatage using a lever to increase force applied.
Base :the lowest part or edge of something especially the part on which it rests or is supported, foundation.
Balance : an even distribution of weight ensuring stability, a state of equillibrium or parity characterised by cancellation of all forces by equal opposing forces
Position : a way in which someone or something is placed or arranged, a situation or set of circumstances.
Angles : the space between two intersecting lines or surfaces at or close to the point where they meet
Transitional Control: the process of changing from one state or condition to another while maintaining the restriction of an activity, tendency or phenomenon.
Strength, size and aggression are handy when grappling but to my mind thats not the gentle art.
Thanks to the Concise Oxford Dictionary for some help explaining the principles