18 LIFE OF PROFESSOR HUXLEY CHAP. I 



" It is only necessary to grow old to become more 

 indulgent. I see no fault committed that I have not 

 committed myself. . . ." Goethe. 



" One solitary philosopher may be great, virtuous, and 

 happy in the midst of poverty, but not a whole nation. 

 . . ." Isaac Iselin. 



1842 



Jan. 30, Sunday evening. I have for some time been 

 pondering over a classification of knowledge. My scheme 

 is to divide all knowledge in the first place into two 

 grand divisions. 1. Objective that for which a man 

 is indebted to the external world ; and 2. Subjective 

 that which he has acquired or may acquire by inward 

 contemplation. 



Subjective Objective 



Metaphysics 



! 



I I ! I 



Metaphys. proper Maths. Logic Theology Morality Hist. Physiology Physics 



Metaphysics comes immediately, of course, under the 

 first (2) head that is to say, the relations of the mind 

 to itself ; of this Mathematics and Logic, together with 

 Theology, are branches. 



I am in doubt under which head to put morality, for 

 I cannot determine exactly in my own mind whether 

 morality can exist independent of others, whether the 

 idea of morality could ever have arisen in the mind of an 

 isolated being or not I am rather inclined to the opinion 

 that it is objective. 



Under the head of objective knowledge comes first 

 Physics, including the whole body of the relations of 

 inanimate unorganised bodies ; secondly, Physiology. 

 Including the structure and functions of animal bodies, 

 including language and Psychology ; thirdly comes 

 History. 



