Le personnalisme

It seems that what we might call the Socratic revolution of the 19th century, the rebellion against all the modern forces of human depersonalization, split into two branches. One, led by Kierkegaard, called modern humanity, dizzy from the discovery and exploitation of the world, back to consciousness of its subjectivity and liberty. The other, led by Marx, denounced the mystifications stemming from the social structures grafted onto its material conditions, and reminded humanity that its destiny lies not only in its heart, but also in its hands. Fatal division! From that point, these two branches would only diverge. The task of our century may be not to reunite them where they can no longer meet, but to go back, beyond their divergence, to the unity they have exiled.
— Emmanuel Mounier (my rough translation)

Emmanuel Mounier, Le personnalisme, 7e éd. (Paris: Les Presses universitaires de France, 1961). Electronic edition (PDF) provided by Gemma Paquet, p. 16.