“Playing around is one thing; following an established regimen is quite another. It's true with exercise equipment and it is true with prayer.”

Ch 43
Source: For Whom the Bell Tolls (1940)

Recent Work on the Principles of Mathematics, published in International Monthly, Vol. 4 (1901), later published as "Mathematics and the Metaphysicians" in Mysticism and Logic and Other Essays (1917)
1900s
Context: Pure mathematics consists entirely of assertions to the effect that, if such and such a proposition is true of anything, then such and such another proposition is true of that thing. It is essential not to discuss whether the first proposition is really true, and not to mention what the anything is, of which it is supposed to be true. Both these points would belong to applied mathematics. We start, in pure mathematics, from certain rules of inference, by which we can infer that if one proposition is true, then so is some other proposition. These rules of inference constitute the major part of the principles of formal logic. We then take any hypothesis that seems amusing, and deduce its consequences. If our hypothesis is about anything, and not about some one or more particular things, then our deductions constitute mathematics. Thus mathematics may be defined as the subject in which we never know what we are talking about, nor whether what we are saying is true. People who have been puzzled by the beginnings of mathematics will, I hope, find comfort in this definition, and will probably agree that it is accurate.

New Principles of Linear Perspective (1715, 1749)

Source: The Call of Sedona: Journey of the Heart

Original: (la) Quid est aliud de philosophia tractare, nisi verae religionis, qua summa et principalis omnium rerum causa, Deus, et humiliter colitur, et rationabiliter investigatur, regulas exponere? Conficitur inde, veram esse philosophiam veram religionem, conversimque veram religionem esse veram philosophiam.

De Divina Praedestinatione, ch. 1; translation from Kenelm Henry Digby Mores Catholici, vol. 8 (London: Booker & Dolman, 1837) p. 198.

Chavez responding to criticism from OAS Secretary General Jose Miguel Insulza regarding the governments decision for not renew the license of an opposition-aligned TV station. (January 9, 2007) https://en.mercopress.com/2007/01/09/insulza-branded-an-idiot <br class="br">2007

Source: The Roving Mind (1983), Ch. 25
Context: How often people speak of art and science as though they were two entirely different things, with no interconnection. An artist is emotional, they think, and uses only his intuition; he sees all at once and has no need of reason. A scientist is cold, they think, and uses only his reason; he argues carefully step by step, and needs no imagination. That is all wrong. The true artist is quite rational as well as imaginative and knows what he is doing; if he does not, his art suffers. The true scientist is quite imaginative as well as rational, and sometimes leaps to solutions where reason can follow only slowly; if he does not, his science suffers.

Kanzul `Ummal, Volume 7, Tradition 18870
Shi'ite Hadith

Source: Dictionary of Burning Words of Brilliant Writers (1895), p. 320