The Will to Believe and Other Essays

It is far too little recognized how entirely the intellect is built up of practical interests. The theory of evolution is beginning to do very good service by its reduction of all mentality to the type of reflex action. Cognition, in this view, is but a fleeting moment, a cross-section at a certain point, of what in its totality is a motor phenomenon. In the lower forms of life no one will pretend that cognition is anything more than a guide to appropriate action. The germinal question concerning things brought for the first time before consciousness is not the theoretic ‘What is that?’ but the practical ‘Who goes there?’ or rather, as Horwicz has admirably put it, ‘What is to be done?’— ‘Was fang’ ich an?’ In all our discussions about the intelligence of lower animals, the only test we use is that of their acting as if for a purpose.