How did Rousseau's outlook work its way into Kant's moral philosophy? If for Rousseau, it is by following the "general will" that we can be said to be free; for Kant, it is by obeying those moral laws that we would will as universal laws. Moral laws that we would will as universal laws are given not by our individual will but by our rational will, which we have in common with all other rational beings.
Whereas for Kant time is one of the categories of the human mind that structure our experience, for Bergson, the duration of time is an absolute reality, and, as a first step, we can know, in our immediate consciousness, the duration of our inner life directly. From that basis, through his four major works, he opens a new path to intuition which he deepens and expands as his philosophy progresses, beyond our own lives to life in general and to the vital principle of all things.