The only limits you have are the limits you believe.

The most perfect education, in my opinion, is such an exercise of the understanding as is best calculated to strengthen the body and form the heart.

Borders are scars on the face of the earth, marks of violence and division.

梦的解析是通往理解心灵无意识活动的康庄大道。

The intersection of mathematics and computer science is where some of the most exciting discoveries are made.

挑战让生活变得有趣；克服挑战让生活变得有意义。