APHORISMS AND REFLECTIONS 17 



men who walk in Priestley's footsteps. But whether 

 Priestley's lot be theirs, and a future generation, in 

 justice and in gratitude, set up their statues ; or 

 whether their names and fame are blotted out from 

 remembrance, their work will live as long as time 

 endures. To all eternity, the sum of truth and right 

 will have been increased by their means ; to all 

 eternity, falsehood and injustice will be the weaker 

 because they have lived. 



Science is, I believe, nothing but trained and 

 organised common sense, differing from the latter only 

 as a veteran may differ from a raw recruit : and its 

 methods differ from those of common sense only so 

 far as the guardsman's cut and thrust differ from 

 the manner in which a savage wields his club. 



The vast results obtained by Science are won by 

 no mystical faculties, by no mental processes, other 

 than those which are practised by every one of us, in 

 the humblest and meanest affairs of life. A detective 

 policeman discovers a burglar from the marks made 

 by his shoe, by a mental process identical with that 

 by which Cuvier restored the extinct animals of 

 Montmartre from fragments of their bones. 



There is no side of the human mind which physio- 

 logical study leaves uncultivated. Connected by 

 innumerable ties with abstract science, Physiology is 

 yet in the most intimate relation with humanity ; and 

 by teaching us that law and order, and a definite 

 scheme of development, regulate even the strangest 



