Aslinya: "No general method for the solution of questions in the theory of probabilities can be established which does not explicitly recognise, not only the special numerical bases of the science, but also those universal laws of thought which are the basis of all reasoning, and which, whatever they may be as to their essence, are at least mathematical as to their form." Boole, George (2012) [Originally published by Watts & Co., London, in 1952]. Rhees, Rush, ed. Studies in Logic and Probability (edisi ke-Reprint). Mineola, NY: Dover Publications. hlm. 273. ISBN978-0-486-48826-4. Diarsipkan dari versi asli tanggal 2023-07-31. Diakses tanggal 27 October 2015.
Aslinya: "No general method for the solution of questions in the theory of probabilities can be established which does not explicitly recognise, not only the special numerical bases of the science, but also those universal laws of thought which are the basis of all reasoning, and which, whatever they may be as to their essence, are at least mathematical as to their form." Boole, George (2012) [Originally published by Watts & Co., London, in 1952]. Rhees, Rush, ed. Studies in Logic and Probability (edisi ke-Reprint). Mineola, NY: Dover Publications. hlm. 273. ISBN978-0-486-48826-4. Diarsipkan dari versi asli tanggal 2023-07-31. Diakses tanggal 27 October 2015.
