数学不是沿着一条清理得很好的高速公路小心行进，而是一次进入陌生荒野的旅程，探险者常常会迷路。

Education is one of the most powerful tools we have for reducing inequality and promoting social mobility.

A man's errors are his portals of discovery.

我相信音乐有治愈、激励、将人们团结在一起的力量。