78 SYMBIOSIS 



Again we get effort, specialisation and capitalisation the 

 solution of the economic problem in the psychic sphere of life. 

 Something of value is to be acquired, to be increased and pre- 

 served entailing labour, division of labour, avoidance of waste, 

 summation of powers, capitalisation and values. The brain is 

 known to be the seat of important bio-chemical " processes," 

 and these may be viewed as having the effect inter alia of fitting 

 all parts of the body increasingly as bio-economic agents. When 

 we get " exercise " and resulting " disposition " we are not far 

 from " right " exercise and " right " disposition, in accordance 

 with the bio-economic explanation so far adduced. The dominant 

 bio-chemical directions are always those given by Symbio- 

 genesis. That is to say, that work and mutual evolution are the 

 secrets of bio-chemical potency, and a common organic or cosmic 

 interest is the secret of the dominance of " right " exercise and 

 " right " disposition. 



We can trace in the laws of pleasure and of pain the same 

 sequences as in the development of mind. This is what Professor 

 Sully says : 



Psychologists have long endeavoured to bring all the varieties of 

 pleasure and pain, bodily and mental, under certain laws. Although they 

 cannot as yet be said to have perfectly succeeded, they have formulated 

 one or two principles which appear approximately correct, and which 

 are of some practical consequence. Of these the principal law may be 

 called the Law of Stimulation or the Law of Exercise. All pleasure is 

 the accompaniment of the activity of some organ which is connected 

 with the nerve centres, or the seat of conscious life. Or, since this activity 

 has its psychical concomitant, we may say that all pleasure is connected 

 with the exercise of some capability, faculty, or power of the mind. And 

 it will be found in general that all moderate stimulation of an organ, or all 

 moderate exercise of a capability, produces pleasure. (Italics mine.) 



I have already alluded to the operation of a law of " sym- 

 biotic moderation " and to its importance in life generally. Here 

 we have further confirmation of its importance from the sphere 

 of Psychology. We see how fundamental and essential indeed 

 is the factor of moderation, which, surely, must never be left out 

 of account in Qualitative Biology. It now becomes more 

 emphatic that all successful association indispensably requires 

 moderation. Adequate stimulation, moderate exercise, 

 moderate appetites, yet continuous application withal, " Ohne 

 Hast und ohne Rast" these are the qualifications needed for 



