Soul

===Immanuel Kant===
In his discussions of rational psychology, [[Immanuel Kant]] (1724–1804) identified the soul as the "I" in the strictest sense, and argued that the existence of inner experience can neither be proved nor disproved.
{{blockquote|We cannot prove a priori the immateriality of the soul, but rather only so much: that all properties and actions of the soul cannot be recognized from materiality.}} It is from the "I", or soul, that Kant proposes transcendental rationalization, but cautions that such rationalization can only determine the limits of knowledge if it is to remain practical.<ref>

Immanuel Kant proposed the existence of certain mathematical truths (2+2 = 4)m that are not tied to matter, or soul.

{{cite book
| last = Bishop
| first = Paul
| title = Synchronicity and Intellectual Intuition in Kant, Swedenborg, and Jung
| publisher = [[Edwin Mellen Press]]
| year = 2000
| location = [[Lewiston, New York]]
| pages = 262–67
| isbn = 978-0-7734-7593-9}}</ref>