大家应该和我一样，正在为最后的申请忙碌吧？很多同学在这个阶段，主文书应该是写得差不多了，但是大学的补充文书可能还没有什么头绪。为什么申请这个大学？为什么申请这个专业？

其实，这样的文书固然写的时候有一定套路，但是有的时候也不妨放开思路，follow your heart and you will get there. 下面这篇文章是一个华人学生Jessica Su申请加州理工时写的文章，当时申请的是数学和生物的双学位，但是后来她换成了计算机科学专业。读完之后，去了斯坦福大学读CS的博士。大家看看学霸是怎么写的吧。

From Day 1, my goal in life has been to understand the universe from a rational perspective. As a child I attempted to develop a moral/political theory derivable from a small set of widely-accepted axioms. Being a less-than-stellar philosopher, I failed at this, though I did end up with two moral theories, both of which contained enormous logical loopholes. As I progressed through middle school and learned to be more precise with my mathematical diction, I realized the flawed nature of my theories, and worse, that few people seemed to care whether they were flawed or not – even the more intelligent people I talked to would claim “math and politics don’t mix.”Thus discouraged, I decided to turn my efforts to science. Not only were the systems simpler to analyze, I reasoned, but the scientific community was also far more receptive to rational thought. I took both Geometry and Algebra II my eighth-grade year, and read up on calculus, physics, chemistry, and biology. Biology especially appealed to me because it explained phenomena relevant to my everyday life, and mathematics because of its logical foundation. Upon entering high school my readings on physics paid off, and I was allowed to pass into AP Physics B (and AP Biology, upon my request).

had a crush on physics that year. The textbook demonstrated not only physics’ utility in understanding the universe, but also its beauty in and of itself. A wave on a string became the linear wave equation, mechanics was reduced to F=dp/dt – who knew one could describe complex natural phenomena with such simplicity and elegance? However, the monogamous nature of my attraction was short-lived: when I went to HCSSiM that summer (Hampshire College Summer Studies in Mathematics), I discovered that mathematics could be still more beautiful. Watching Kelly take hours to prove Fermat’s Little Theorem, then with Lagrange’s Theorem conquer it in a single stroke – watching him show two seemingly distinct branches of mathematics were in fact inextricably connected – this was more beautiful than the best philosophical treatise, or even any proof I had seen in physics. I decided that even if it didn’t help me understand the universe as well as other subjects, I would study higher mathematics for its incredible awesomeness.

Yet I refused to abandon my long-standing goal in order to become a child of pleasure. The math I had done at Hampshire did not have any immediate, obvious applications to the real world (save solving the Rubik’s Cube), and though learning about how you can take a sphere and divide it into two spheres of the same volume as the original sphere might be cool, it certainly didn’t help me understand the world around me. Thus, while considering majoring in mathematics, I also began looking into research opportunities with various professors of biology. I ended up working with Professor Hay (of Caltech) the following summer on a project that aimed not only to understand the universe, but also to change it. My job was to use (mathematical) modeling to discover how long these changes would take. To mould the universe to my specifications, to cure malaria with the touch of a button – this wasn’t just enlightenment; this was power. I fell in love with it, and decided to major in biology as well. Yet had I been a man, genetics would have been my wife, and mathematics my mistress: after hours I would sneak over to the back room and do abstract algebra with a pen in my hand and passion in my eyes.

My intention to double-major in biology and mathematics will be the fusion of my objective and my passion; I will get to play with my axiomatic systems and understand the phenomena closest to my heart. I apply to Caltech so that I may work hard and play hard, doing biology for understanding and mathematics for leisure. I know firsthand Caltech is an incredible place for biology, and based on the ratio of math books to other books at the Caltech bookstore and the undergrads’ attitude towards their classes (among other things), I can infer it’s a great place for mathematics. At Caltech, I hope to have fun, but also to acquire an understanding of the world around me.

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