So those of you who are in natural sciences are probably

你们当中研究自然科学的同学
familiar with Descartes and his pioneering work on optics.

可能对笛卡尔和他开创性的视觉著作很熟悉吧
John Locke, for those of you who aspire to become a doctor,

有志成为医生的人也许知道约翰·洛克
was actually studying medicine and performed a surgery

曾经是医学出身并为一位非常有名的
on a very well-known English politician,

英国政治家动过手术
a quite successful surgery, though even today doctors quite

而且手术很成功虽然直到现在
don't know whether this politician survived because of

医生们也不知道这位政治家能活下来
good luck or because of the surgery.

到底是因为运气好还是手术救了他
Anyway, the point I'm trying to make,

不管怎样我要说的重点是
in the early sixteenth, seventeenth, eighteenth centuries,

在十六世纪初十七十八世纪
sciences and social sciences

自然科学和社会科学
are not separated from each other yet.

还没有截然地区分开来