Lecture I

The scientist today seeks to approach Nature from three vantage-points. In the first place he is at pains to observe Nature in such a way that from her several creatures and phenomena he may form concepts of species, kind and genus. He sub-divides and classifies the beings and phenomena of Nature. You need only recall how in external, sensory experience so many single wolves, single hyenas, single phenomena of warmth, single phenomena of electricity are given to the human being, who thereupon attempts to gather up the single phenomena into kinds and species. So then he speaks of the species “wolf” or “hyena”, likewise he classifies the phenomena into species, thus grouping and comprising what is given, to begin with, in many single experiences. Now we may say, this first important activity is already taken more or less unconsciously for granted. Scientists in our time do not reflect that they should really examine how these “universals”, these general ideas, are related to the single data.