The four paths in Abhidharmako/sa 俱舍论 doctrine. （1） The path of preparation 加行道--the stage at which one gathers the energy for the development of the three stages of worthiness and the four roots of goodness （三贤、 四善根）， practicing /si^la， sama^dhi and prajn~a^. （2） The path of non-obstruction 无间道-- the stage where defilements are destroyed by the awakening of correct wisdom. （3） The path of liberation 解脱道--wherein one thought-moment of correct wisdom one awakens to reality. （4） The path of superb advancement 胜进道. Having awakened， one enters anew onto the path of meditation and wisdom.