GREATER PROBLEMS OF BIOLOGY—THOMPSON. 893 
And if wonderment springs, as again Aristotle tells us, from ignor- 
ance of the causes of things, it does not cease when we have traced 
and discovered the proximate causes, the physical causes, the efficient 
causes of our phenomena. For behind and remote from physical 
causation lies the end, the final cause of the philosopher, the reason 
why, in the which are hidden the problems of organic harmony and 
autonomy, and the mysteries of apparent purpose, adaptation, 
fitness, and design. Here, in the region of teleology, the plain 
rationalism that guided us through the physical facts and causes 
begins to disappoint us, and intuition, which is of close kin to faith, 
begins to make herself heard. 
And so it is that, as in wonderment does all philosophy begin, so 
in amazement does Plato teach us that all our philosophy comes to 
an end.' [iver and anon, in presence of the magnalia naturae, we 
feel inclined to say with the poet, 
Ob ydo te vov ye KaybEc, GAN’ det zoTE 
Zo tabta, Kovdetc otdev && Otov ’pavy. 
‘These things are not of to-day nor yesterday, but evermore, and no 
man knoweth whence they came.”’ | 
I will not quote the noblest words of all that come into my mind, 
but only the lesser language of another of the greatest of the Greeks: 
‘“The ways of His thoughts are as paths in a wood thick with leaves, 
and one seeth through them but a little way.” 
1 Cf. Coleridge, Biogr. Lit. 
