بیشترتوضیحاتافزودن یادداشت جدید
64Al-Biruni (1) (d. 1048) and Ibn Haitham (1) (d. 1038) who anticipated modern empirical Psychology in recognising what is, called reaction-time, gave up all inquiry concerning the nature of the supersensual, and maintained a prudent silence about religious matters. Such a state of things could have existed, but could not have been logically justified before Al-Ash`ari. 1 He (Al-Biruni) quotes with approval the following, as the teaching of the adherents of Aryabhatta: It is enough for us to know that which is lighted up by the sun's rays. Whatever lies beyond, though it should be of immeasurable extent, we cannot make use of; for what the sunbeam does not reach, the senses do not perceive, and what the senses do not perceive we cannot know. From this we gather what Al-Biruni's Philosophy was: only sense-perceptions, knit together by a logical intelligence, yield sure knowledge. (Boer's Philosophy in Islam p. 146). 2 "Moreover truth for him (Ibn Haitham) was only that which, was presented as material for the faculties of sense. perception, and. which received it from the understanding, being thus the logically, elaborated perception". (Boer's Philosophy in Islam, p. 150).
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