Though he disclaims being a follower of Herbart, his formal definition of philosophy and his conception of the object of metaphysics are similar to those of Herbart, who defines philosophy as an attempt to remodel the notions given by experience.
Are: - (1) The extensive work on the fundamental notions of physics, called Communia Naturalium, which is found in the Mazarin library at Paris, in the British Museum, and in the Bodleian and University College libraries at Oxford; (2) on the fundamental notions of mathematics, De Cornmunibus Mathematicae, part of which is in the Sloane collection, part in the Bodleian; (3) Baconis Physica, contained among the additional MSS.
The world of many things surrounds us; our notions, by which we manage correctly or incorrectly to describe it, are also ready made.
What remains to be done is, not to explain how such a world manages to be what it is, nor how we came to form these notions, but merely this - to expel from the circle and totality of our conceptions those abstract notions which are inconsistent and jarring, or to remodel and define them so that they may constitute a consistent and harmonious view.
In this endeavour Lotze discards as useless and untenable many favourite conceptions of the school, many crude notions of everyday life.