Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: changes; and even if the cause of the variation is of a psychological nature, we can hardly call it an effort, unless we give a very unusual extension to the meaning of the word. The truth is, it is necessary to dig beneath the effort Innk for a dpppfr cruise. This is especially necessary, we believe, if we wish to get at a cause of regular hereditary variations. We are not going to enter here into the controversies over the transmissibility of acquired characters; still less do we wish to take too definite a side on this question, which is not within our province. But we cannot remain completely indifferent to it. Nowhere is it clearer that philosophers can not to-day content themselves with vague generalities, but must follow the scientists in experimental detail and discuss the results with them. If Spencer had begun by putting to himself the question of the heredita- bility of acquired characters, his evolutionism would no doubt have taken an altogether different form. If (as seems probable to us) a habit contracted by the individual were transmitted to its descendants only in very exceptional cases, all the Spencerian psychology would need re-making, and a large part of Spencer's philosophy would fall to pieces. Let us say, then, how the problem seems to us to present itself, and in what direction an attempt might be made to solve it. After having been affirmed as a dogma, the transmissibility of acquired characters has been no less dogmatically denied, for reasons drawn o priori from the supposed nature of germinal cells. It is well known how Weismann was led, by his hypothesis of the continuity of the germ-plasm, to regard the germinal cells ? ova and spermatozoa ? as almost independent of the somatic cells. Starting from this, it has been claimed, and is still claime...
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如果你是一位《星际迷航》迷，在连续追看了它现有的11部系列电影之后，一定会对剧中关键性人物Spock有非常深刻的印象。作为人类和瓦岗人的混血后裔，Spock一直在思考这样一个问题：选择做瓦岗人还是人类，选择理智还是感性？这个问题在《星际迷航6》中，给出了确切答案：Logic ...
评分看《时间之箭》，里面好像说过这样的观点，时间的单向流动性，是因为我们的大脑的工作方式所产生的感受——我们的大脑的思考与记忆的机制，也正好像算盘一样，通过算珠从有序到无序演化，来储存记忆运行思考，我们思考的方向，赋予一切外在事物的演化方向：从有序到无序，所以...
评分 评分柏格森的进化论，准确地讲，并不是evolution，而是transformism，演变论。他不想在细致地考察生物之演变中夹杂哪怕一丁点的人为设想。 他对前辈们的批评，集中在：用“机械论”“目的论”等观念来分解、描述生命的演变，不能真实地考察生命演变，因为做完分解的工作之后，就只...
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