The Basis of Morality by Part 2 Chapter 8 Page 7

The work would deserve praise if its author had had the honesty to say that he is drawing on Kant's wisdom, not on his own. As it is, a certain part of the philosophic public still credits him with the entire performance.

The theory itself, and the whole question regarding the nature of Freedom, can be better understood if we view them in connection with a general truth, which I think, is most concisely expressed by a formula frequently occurring in the scholastic writings: Operari sequitur esse. In other words, everything in the world operates in accordance with what it is, in accordance with its inherent nature, in which, consequently, all its modes of expression are already contained potentially, while actually they are manifested when elicited by external causes; so that external causes are the means whereby the