Publishing Principia would result in an estimated loss of approximately 600 pounds.

2009年9月21日の日記で‘How Many Copies of Russell's Books Were Printed?’という文章を書きました。
Principia などが何部刷られていたのかを記したものです。
加えて以下のような文がありましたので、興に任せ、さらにここに記載しておきます*1

Unfortunately, after almost a decade of difficult work on the part of both men [Whitehead and Russell], Cambridge University Press concluded that publishing Principia would result in an estimated loss of approximately 600 pounds. Although the press agreed to assume half this amount and the Royal Society agreed to donate another 200 pounds, that still left a 100-pound deficit. Only by each contributing 50 pounds were the authors able to see their work through to publication.

Russell さんたちも大変ですね。書き終わって確かにこれでは気が滅入る。まぁ Russell さんは多分お金持ちの家系だったと思いますので、金銭的には別にどうということもなかったかもしれませんが、それでもね…。

*1:A. D. Irvine, “Principia Mathematica,” in: The Stanford Encyclopedia of Philosophy, 1996/2003, Section: History of Principia Mathematica.