Contemporary readers of Descartes can hardly fail to notice that the author uses the word pensée, or cogitatio, in a much broader sense than French speakers use pensée nowadays, or we use the closest English word, thought. He consistently maintains that feelings, sensations, as well as the products of one's fancy, are one and all modes of thought.
Yet, clearly, according to the normal use of the word, sensations of light, of sound, of hunger, and so forth, are not regarded as part of one's thinking, nor do we so regard the spontaneous flight of the imagination one might experience in daydreams or real dreams, or while thinking about unrelated matters. Some of these sensations, notably aches, pains, pangs of hunger, blinding light, and strong noise, are not only not counted among our thoughts, but they are apt to interfere with our thinking, and, in extreme cases, might stop it altogether. In a similar way, the lascivious play of St. Antony's imagination did not embellish his meditations on the holy mysteries; he had to overcome or ignore it to be able to pursue the train of his thought.