"Writing is a way of thinking, not just a record of thought."
"Nothing is too high for a man to reach, but he must climb with care and confidence."
数学思想的真正考验是它能否激发更多的问题。
Small farmers are the backbone of global food security—they deserve investment and respect.
第一个错误的假设是质量意味着好、奢华、闪亮或重量。
You can't change the past, but you can shape the future.