"The mind unlearns with difficulty what it has long learned." Seneca the Younger Today I learned biographical facts about one of the most distinguished exponents of classical Stoicism. Yes, I had not realized that the Seneca I had read years ago was the junior, whose father with the same name was also famous and famous as a lawyer and orator. Besides having a brother quoted in the Christian New Testament: Galion; and another brother poet: Lucan. I have in my library some volumes with writings by Cicero and Seneca, as well as Marcus Aurelius. Stoicism is a relatively high moral philosophy, but I must clarify if memory serves me correctly, that based on some records of the lives of these men, we find contradictions between thinking and doing in some of them. Well, that's how complicated we humans are. This would give to develop an extensive article by itself. But, it is not my intention on this occasion. The quote's significance lies in the simplicity with which the philosopher posed the rigidity of the human mind with the passage of time. Sometimes it is necessary to unlearn bad habits and wrong ideas, but it is not as easy as saying it. The force of habit should not be underestimated. Image: Portrait de Sénèque d'après l'antique » (le Pseudo-Sénèque), burin (H. 29 cm ; l. 20 cm) réalisé d'après Pierre Paul Rubens vers 1638 par [[:fr:Lucas Vorsterman|Lucas Vorsterm