不了解敌情,不可以行军打仗,不熟悉洋人的情况,不可以远谋。
We make up horrors to help us cope with the real ones.
No man, for any considerable period, can wear one face to himself and another to the multitude, without finally getting bewildered as to which may be the true.
Persist in doing what you love, and don't give up easily even when facing difficulties.