dissertation sur ironie

Troisième argument Enfin l'ironie, s'adressant uniquement à la partie intellectuelle de l'esprit humain, laisse de côté, et c'est volontaire comme nous l'avons vu, la sensibilité. N'est-ce-pas Voltaire, un grand spécialiste en la matière, qui affirme que « l'Ironie ne convient point aux passions : elle ne peut aller au coeur. » (citŽ dans le Dictionnaire dramatique de Laporte et Chamfort, 1776). Ou bien elle joue avec les émotions, souvent à la limite du supportable, comme Swift, qui enfreint (et même au second degré c'est presque insoutenable) deux tabous humains fondamentaux : le meurtre des enfants et l'anthropophagie. De manière moins extrême, Candide ne connaîtra jamais le bonheur, et quand il sera enfin réuni à Cunégonde, celle-ci, après une vie de débauche, sera devenue bien laide : le lecteur somme toute est déçu. Or, en choquant ou en décevant le lecteur, l'ironiste s'interdit de le persuader vraiment, car il faut pour cela créer une vraie émotion, sans laquelle on ne saurait emporter l'adhésion entière de celui à qui l'on s'adresse.
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Total trace metals (Cd, Co, Cu, Fe, Mn, Ni, Pb, Zn), Al, and pyrite- and reactive-associated metals were measured for the first time in a microbial mat and its underlying anoxic-sulfidic sediment collected in the saltern of Guerrero Negro (GN), Baja California Sur, Mexico. It is postulated that the formation of acid volatile sulfide (AVS) and pyrite in the area of GN could be limited by the availability of reactive Fe, as suggested by its limited abundance (mat and sediment combined average value of only 19 ± 10 μmol g−1; n = 22) as well as the low pyrite (0.89–7.9 μmol g−1) and AVS (0.19–21 μmol g−1) concentrations (for anoxic-sulfidic sediments), intermediate degrees of pyritization (12–50%), high degrees of sulfidization (14–100%), generally low degrees of trace metal pyritization, and slight impoverishment in total Fe. This is a surprising result considering the large potential reservoir of available Fe in the surrounding desert. Our findings suggest that pyrite formation in the cycling of trace metals in the saltern of GN is not very important and that other sedimentary phases (e.g., organic matter, carbonates) may be more important reservoirs of trace elements. Enrichment factors [EFMe = (Me/Al)sample/(Me/Al)background] of Co, Pb, and Cd were high in the mat (EFMe = 2.2 ± 0.4, 2.8 ± 1.6 and 34.5 ± 9.8, respectively) and even higher in the underlying sediment (EFMe = 4.7 ± 1.5, 14.5 ± 6.2 and 89 ± 27, respectively), but Fe was slightly impoverished (average EFFe of 0.49 ± 0.13 and 0.50 ± 0.27 in both mat and sediment). Organic carbon to pyrite-sulfur (C/S) molar ratios measured in the mat (2.9 × 102–27 × 102) and sediment (0.81 × 102–6.6 × 102) were, on average, approximately 77 times higher than those typically found in marine sediments (7.5 ± 2.1). These results may indicate that ancient evaporation basins or hypersaline sedimentary environments could be.