在没有航海图的海域上航行是需要勇气的。
True courage is not the absence of fear, but moving forward in the face of fear.
受过教育的心灵的标志是能够思考一种思想而不必接受它。
The journey of a thousand miles begins with one step.
"We are all in the gutter, but some of us are looking at the stars."