It is the last and most thorough attempt to resolve individual and universal, temporal and eternal, natural and ideal, good and evil, into an absolute unity in which the universal, eternal, ideal, and good shall dominate, and in which all terms shall be related with such necessity as obtains in the definitions and theorems of geometry.
"The Approach to Philosophy"
Ralph Barton Perry
Nothing can be easier than to prove the incompatibility of some of his theorems.
"Prophets of Dissent Essays on Maeterlinck, Strindberg, Nietzsche and Tolstoy"
Otto Heller
This natural wisdom is exercised spontaneously in him, it is the result of inborn theorems of which he may not even be aware, but which he uses with a sureness that defies the book-learning of all our teachers of mathematics.
"The Human Side of Animals"
Royal Dixon