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在达尔文主义这一门课程中,有三个问题比较最不容易答复,而这三个问题却是最常发生的。这三个问题便是(1)种内斗争;(2)新种的形成;(3)性选择。“性选择是否是事实”这一问题在问题解答中,我已经作了一个简单的答复。新种的形成的,新学说,生物学通报1卷3期也已有专文发表,现在来谈一谈种内斗争的一些问题。种内无斗争这一理论是比较容易明了的。“达尔文主义基础”的书上都说的很清楚,我们有许多理由,也有许多证据来说明这一点。但是,主要的困难是具体的问题,例如猫吃小猫,蚂蚁打架,雌蜘蛛吃雄蜘蛛等类的问题。在北京大学达尔文主
In the course of Darwinism, there are three problems that are the least likely to be answered, but these three are the most common. These three issues are (1) intra-species struggle; (2) the formation of new species; and (3) sexual choices. The question of whether sexual choice is a fact or not has already been answered in simple terms by the answer to the question. The formation of new species, new doctrine, biology Bulletin 1 Volume 3 has also published an article, and now to talk about some of the issues within the fight. The theory of no struggle within the species is relatively easy to understand. It is clear from the book “Basis of Darwinism” that we have many reasons and many evidences to illustrate this point. However, the main difficulties are specific issues such as cat eating kittens, ant fights and female spiders eating male spiders. Darwin Lord at Peking University