Marks of a Clear Mind

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. As I urge again and again throughout this book and throughout all my ''books, science is only a small part of life; it is only one approach to truth; but in its own domain it is supreme. It can brook no rival. It knows no mercy; it is utterly inhuman. It knows no friends, no enemies; it has no heart, no emotion, no passion, except one, the passion to think straight, the passion not to be fooled, and not to fool any one else. There is nothing mysterious about it at all. Indeed its whole passion is to remove mystery, to replace mystery with knowledge.