A man can succeed at almost anything for which he has unlimited enthusiam.
只要有无限的热情，一个人几乎可以在任何事情上取得成功。
If you would hit the mark, you must aim a little above it. Every arrow that flies feels the attraction of earth.
要想射中靶心，必须瞄准比靶略微高些，因为脱靶之箭都受到地心引力的影响。
If you doubt yourself, then indeed you stand on shaky ground.
如果你怀疑自己，那么你的立足点却是不稳固了。