He categorized four relations: there is being by knowledge, being by being, knowledge by being, and knowledge by knowledge.
उनीहरूको मतमा उत्पादनका चार साधन (तŒव)हरूमध्ये उद्यमशीलता वा ज्ञानको भूमिका सर्वाधिक महŒवपूर्ण हुन्छ ।