Act only according to that maxim whereby you can at the same time will that it should become a universal law.

Without man and his potential for moral progress, the whole of reality would be a mere wilderness, a thing in vain, and have no final purpose.

Great minds think for themselves.

Whereas the beautiful is limited, the sublime is limitless, so that the mind in the presence of the sublime, attempting to imagine what it cannot, has pain in the failure but pleasure in contemplating the immensity of the attempt

The sum total of all possible knowledge of God is not possible for a human being, not even through a true revelation. But it is one of the worthiest inquiries to see how far our reason can go in the knowledge of God.

Space and time are the framework within which the mind is constrained to construct its experience of reality.

Philosophy stands in need of a science which shall determine the possibility, principles, and extent of human knowledge à priori.