In criminal law, there is a sharp distinction between intent and motive. But this distinction is often neglected.
Motive is the moving power which impels one to action for a definite result, whereas intent is the purpose to use a particular means to effect such result.
Motive is often not an element of a crime, while intent normally is. The question of motive then suggests an inquiry into the state of mind of a person and his thoughts (which is difficult, if not impossible, to conclusively determine), while intent can be established based on a person’s manifest, external actions, e.g., intent to kill is established when a person inflicts mortal wounds on a person.