To be sure, scientific communication between positive scientists and philosophers cannot be tied down to definite rules, especially since the clarity, certainty, and originality of critiques by scientists of the foundations of their own positive sciences change as often and are as varied as the stage reached and maintained by philosophy in clarifying its own essence. This communication stays genuine, lively, and fruitful only when the respective positive–ontic and transcendental–ontological inquiries are guided by an instinct for the issues and by the certainty of scientific good sense, and when all the questions about dominance, pre-eminence and vitality recede behind the inner necessities of the scientific problem itself.