_Certainty, or Conviction, is a sense, unmixed with doubt, that the affirmations of our mind will harmonize with Experience._ xvi. Knowledge 1. _Absolute knowledge, which is possessed by no man, would be an identity between our mental affirmations and those of the Creator; who knows all things in their Essence and Causes._ 2. _Knowledge (relative and ordinary) is (very often) a name loosely given to a harmony between our mental affirmations and the affirmations of the vast majority of those who have (or are thought by the majority to have) the best opportunities for observation and judgement._ _It might be more usefully defined as those mental affirmations which harmonize with our nature and environment, i.e. with our spiritual and material experience._ xvii. Illusions and Delusions _Illusions are mental affirmations not harmonizing with immediate experience, but preparatory for absolute knowledge. Delusions are mental affirmations not harmonizing with experience, nor preparatory for absolute knowledge._ Footnote 41: Some might prefer “harmonize with experience _or with fact_.” But “harmony with _fact_” can _never_ be proved: you can only prove harmony with your experience, or with the general experience, of the fact; or with experience of what others say about the fact. THE END RICHARD CLAY AND SONS, LONDON AND BUNGAY. ● Transcriber’s Notes: ○ Missing or obscured punctuation was silently corrected. ○ Inconsistent spelling and hyphenation were made consistent only when a predominant form was found in this book. ○ Text that was in italics is enclosed by underscores (_italics_). ○ Text that was in bold face is enclosed by equals signs (=bold=). ○ Footnotes have been moved to follow the letters in which they are referenced. End of Project Gutenberg's The Kernel and the Husk, by Edwin A. Abbott