Logic is concerned with the real world just as truly as zoology [is].
Introduction to Mathematical Philosophy, Chapter XVI (p. 169), Dover Publications, Inc. 1993
![Logic is concerned with the real world just as truly as zoology [is].](https://img.libquotes.com/pic-quotes/v1/bertrand-russell-quote-lbv1t0k.jpg)
![Logic is concerned with the real world just as truly as zoology [is].](https://img.libquotes.com/pic-quotes/v2/bertrand-russell-quote-lbv1t0k.jpg)
![Logic is concerned with the real world just as truly as zoology [is].](https://img.libquotes.com/pic-quotes/v3/bertrand-russell-quote-lbv1t0k.jpg)
![Logic is concerned with the real world just as truly as zoology [is].](https://img.libquotes.com/pic-quotes/v4/bertrand-russell-quote-lbv1t0k.jpg)
