The distinction between 'sentimental' and 'sensitive' is crucial. A sentimental person may outwardly express emotions and compassion but can exhibit brutal behavior in private. For instance, Rousseau, despite his tears over progressive ideals, neglected his own children, highlighting the disconnect between sentimentality and genuine sensitivity. Sentimental figures can appear caring yet may engage in cruel acts, demonstrating that emotions do not equate to morality.

This contrast is seen in various examples, such as sentimental politicians who may engage in manipulative behavior while showing affection on specific occasions. Historical figures like Stalin and Lenin illustrate how powerful leaders can display tenderness in public while being capable of ruthless acts behind the scenes. This demonstrates that true sensitivity involves an inherent kindness and consideration for others, which sentimentalism alone lacks.