182 SECTIONAL ADDRESSES 
be experienced, that I maintain that psychology is the most empirical of all 
the sciences. 
Perhaps I may end with another quotation from the writings of the 
same distinguished physicist from whom I quoted as a text: “ We have 
found a strange footprint on the shores of the unknown. We have 
devised profound theories, one after another, to account for its origin. 
At last, we have succeeded in reconstructing the creature that made the 
footprint. And lo! it is our own.’ 
