Book contents
- Frontmatter
- PREFACE
- Contents
- PART I THE UNKNOWABLE
- PART II LAWS OF THE KNOWABLE
- I LAWS IN GENERAL
- II THE LAW OF EVOLUTION
- III THE LAW OF EVOLUTION (CONTINUED)
- IV THE CAUSES OF EVOLUTION
- V SPACE, TIME, MATTER, MOTION, AND FORCE
- VI THE INDESTRUCTIBILITY OF MATTER
- VII THE CONTINUITY OF MOTION
- VIII THE PERSISTENCE OF FORCE
- IX THE CORRELATION AND EQUIVALENCE OF FORCES
- X THE DIRECTION OF MOTION
- XI THE RHYTHM OF MOTION
- XII THE CONDITIONS ESSENTIAL TO EVOLUTION
- XIII THE INSTABILITY OF THE HOMOGENEOUS
- XIV THE MULTIPLICATION OF EFFECTS
- XV DIFFERENTIATION AND INTEGRATION
- XVI EQUILIBRATION
VIII - THE PERSISTENCE OF FORCE
Published online by Cambridge University Press: 29 August 2010
- Frontmatter
- PREFACE
- Contents
- PART I THE UNKNOWABLE
- PART II LAWS OF THE KNOWABLE
- I LAWS IN GENERAL
- II THE LAW OF EVOLUTION
- III THE LAW OF EVOLUTION (CONTINUED)
- IV THE CAUSES OF EVOLUTION
- V SPACE, TIME, MATTER, MOTION, AND FORCE
- VI THE INDESTRUCTIBILITY OF MATTER
- VII THE CONTINUITY OF MOTION
- VIII THE PERSISTENCE OF FORCE
- IX THE CORRELATION AND EQUIVALENCE OF FORCES
- X THE DIRECTION OF MOTION
- XI THE RHYTHM OF MOTION
- XII THE CONDITIONS ESSENTIAL TO EVOLUTION
- XIII THE INSTABILITY OF THE HOMOGENEOUS
- XIV THE MULTIPLICATION OF EFFECTS
- XV DIFFERENTIATION AND INTEGRATION
- XVI EQUILIBRATION
Summary
§ 72. Before taking a first step in the rational interpretation of Evolution, it is needful to recognize, not only the facts that Matter is indestructible and Motion continuous, but also the fact that Force persists. An attempt to assign the causes of Evolution, would manifestly be absurd, if that agency to which the metamorphosis in general and in detail is due, could either come into existence or cease to exist. The succession of phenomena would in such case be altogether- arbitrary; and deductive science impossible.
Here, indeed, the necessity is even more imperative than in the two preceding cases. For the validity of the proofs given that Matter is indestructible and Motion continuous, really depends upon the validity of the proof that Force is persistent. An analysis of the reasoning demonstrated that in both cases, the à posteriori conclusion involves the assumption that unchanged quantities of Matter and Motion are proved by unchanged manifestations of Force; and in the à priori cognition we found this to be the essential constituent. Hence, that the quantity of Force remains always the same, is the fundamental cognition in the absence of which these derivative cognitions must disappear.
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- First Principles , pp. 251 - 258Publisher: Cambridge University PressPrint publication year: 2009First published in: 1862