1. Skill and confidence are an unconquered army.
    技能和信心是无敌的军队。

2. Sometimes a tame elephant is tethered nearby to give the wild one confidence,
    有时，把一头已驯服的象拴在旁边能给野象以信心。

3. Positive motivation — the gathering of feelings of enthusiasm, energy and confidence — is vital for achievement.
    积极的动机，即积聚起高涨的热情、旺盛的精力和充分的信心，这对获得成就至关重要。

4. In this way self-confidence grows, first from mastering a subject, then from being able to talk about it.
    这样，你自信心不断增强，先是因为掌握一门学问，接下来是因为能够就此发表见解。