数学的本质在于它的自由。
"The essence of mathematics lies in its freedom."
You can't change the past, but you can shape the future.
数学不是一项观赏性运动。你必须亲自去做才能理解它。
哲学的真正意义在于它能够唤醒我们的批判意识。
战略不是计划的结果,而是相反:它是计划的起点。
New opinions are always suspected, and usually opposed, without any other reason but because they are not already common.
最大的风险是不冒任何风险。在一个快速变化的世界里,唯一注定失败的策略就是不冒险。