Abstract
Donald Davidson believes that all weak-willed actions are incontinent and irrational actions, and he thinks an agent must have no reason for doing akratic action when she judges doing another is better. This thesis argues against Donald Davidson’s views that all weak-willed actions are irrational. That is, the thesis argues that akrasia can be partially rational, and the reason why an akratic agent has a weak will and cannot persistently carry out her rational decision has a lot to do with the presence of the unavoidable emotional factors.