"What I consider completely sterile is the attitude, for instance, of Bertalanffy who is going around and jumping around for years saying that all the analytical science and molecular biology doesn’t really get to interesting results; let’s talk in terms of general systems theory ... there cannot be anything such as general systems theory, it’s impossible. Or, if it existed, it would be meaningless."

“Where then shall we find the source of truth and the moral inspiration for a really scientific socialist humanism, if not in the sources of science itself, in the ethic upon which knowledge is founded, and which by free choice makes knowledge the supreme value - the measure and warrant for all other values? An ethic which bases moral responsibility upon the very freedom of that axiomatic choice. Accepted as the foundation for social and political institutions, hence as the measure of their authenticity, their value, only the ethic of knowledge could lead to socialism. It prescribes institutions dedicated to the defence, the extension, the enrichment of the transcendent kingdom of ideas, of knowledge, and of creation - a kingdom which is within man, where progressively freed both from material constraints and from the deceitful servitudes of animism, he could at last live authentically, protected by institutions which, seeing in him the subject of the kingdom and at the same time its creator, could be designed to serve him in his unique and precious essence. A utopia. Perhaps. But it is not an incoherent dream. It is an idea that owes its strength to its logical coherence alone. It is the conclusion to which the search for authenticity necessarily leads. The ancient covenant is in pieces; man knows at last that he is alone in the universe's unfeeling immensity, out of which he emerged only by chance. His destiny is nowhere spelled out, nor is his duty. The kingdom above or the darkness below: it is for him to choose.”

“A curious aspect of the theory of evolution is that everybody thinks he understands it.”