The only thing that can stop you is you.
Silence is not the absence of sound, but the presence of an unspoken truth.
The magic, the wonder, the mystery and the innocence of a child's heart are the seeds of creativity that will heal the world.
A proof is a device for convincing someone else that a mathematical statement is true.
人生中最美好的时刻,不是那些被动、接受、放松的时光……最美好的时刻通常发生在一个人自愿努力去完成一项艰难而有价值的事情时,身体或心灵被拉伸到极限的时候。