Being and value, by J. Zaragüeta y Bengoechea.
The origin of man, by X. Zubiri.
Negation, by J. Gaos.
The juridical notion of the human person and the rights of man, by L. Legaz y Lacambra.
History and truth, E. Nicol.
Vital anxiety, by J. J. López Ibor.
The moralization of power through its self
imitation, by J. L. Aranguren.
The doctor-patient relationship in the general framework of interhuman relationships, by P. Laín Entralgo.
On the singular character of the historical destiny of Europe, by L. Díez del Corral.
On taking things for granted, by J. Ferrater Mora.
The idea of metaphysics, by J. Marías.