274 



Essay on Motion and Force. 



error in thought and conclusion. To admit that there is 

 a limit to human thought and understanding, and if possi- 

 ble to define that limit, would be of incalculable benefit to 

 mankind, serving to check those vain speculations, upon 

 hypothetical abstractions, which have so consumed the 

 time and energies of men in all ages. That in physical 

 science this extreme limit is reached in the conclusion 

 that matter is, and that matter moves. I firmly believe. 

 Whatever we learn of what lies beyond this, must be 

 through revelation from a higher intelligence ; and where 

 our reason fails to perceive the mysterious link whieh con- 

 nects the material with the immaterial, our faith must be 

 to us "the evidence of things not seen." 



