No mathematician is infallible;he may make mistakes,but he must not hedge.

没有一位数家是一贯正确的;他可能会犯错误,但他绝不会回避任何一个问题。

This thesis makes an exposition of the mathematics logicism thought of Russell ,the great mathematician and logician in phytogeny of logic.

本文对伟大的数家和逻辑家伯特兰·罗素的数逻辑主义思想进行了研究和探讨。