Yet indications in the poem itself have been pointed out which might incline us to accept the story rather as a meagre tradition of some tragic circumstances in the poet's history, than as the idle invention of an uncritical age. The unrelieved intensity of thought and feeling, by which more almost than any other work of literature it is characterised, seems indicative of an overstrain of power, which may well have caused the loss or eclipse of what to the poet was the sustaining light and joy of his life[342]. Under such a calamity it would have been quite in accordance with the principles of his philosophy to seek refuge in self-destruction, and to imitate an example which he notes in the case of another speculative thinker, on becoming conscious of failing intellectual power[343]. But this general sense of overstrained tension of thought and feeling is, as was first pointed out by his English Editor, much intensified by references in the poem (as at i. 32; iv. 33, etc.), to the horror produced on the mind by apparitions seen in dreams and waking visions[344]. 'The emphatic repetition,' says Mr. Munro, 'of these horrid visions seen in sickness might seem to confirm what is related of the poet being subject to fits of delirium or disordering sickness of some sort.' He further shows by quotation from Suetonius' 'Life of Caligula,' that such mental conditions were attributed to the administration of a love-philtre. The coincidence in these recorded cases may imply nothing more than the credulity of Suetonius, or of the authorities whom he followed: but it is conceivable that Lucretius may have himself attributed what was either a disorder of his own constitution, or the result of a prolonged overstrain of mind, to the effects of some powerful drug taken by him in ignorance[345]. Thus, while the statement of Jerome admits neither of verification nor refutation, it may be admitted that there are indications in the poem of a great tension of mind, of an extreme vividness of sensibility, of an indifference to life, and, in the later books, of some failure in the power of organising his materials, which incline us rather to accept the story as a meagre and distorted record of tragical events in the poet's life, than as a literary myth which took shape out of the feelings excited by the poem in a later age. Yet this qualified acquiescence in the tradition does not involve the belief that any considerable portion of the poem was written 'per intervalla insaniae,' or that the disorder from which the poet suffered was actually the effect of a love-philtre.