A man can succeed at almost anything for which he has unlimited enthusiam.
只要有無限的熱情，一個人幾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，必須瞄準比靶略微高些，因為脫靶之箭都受到地心引力的影響。

If you doubt yourself, then indeed you stand on shaky ground.
如果你懷疑自己，那么你的立足點卻是不穩(wěn)固了。