“Freedom, according to Kant, cannot be scientifically proven. For him science is always bound to sensory experience, to ‘natural reality’ as understood in the limited context of Kant’s own concept-ions. Freedom and autonomy of personality do not lie in sensory nature. They are practical ideas of man’s ‘reason’; their supra-sensory reality remains a matter of faith… Rooted in autonomous reason itself, it is entirely in keeping with the autonomy of the human personality.”

K. Jaspers