What We Have Learned 判断真理与谬误的头脑a mind for judging truth and error 认真思考的 with careful thought 力量的源泉 a source of strength 毫不犹豫 not hesitate a moment 有效地采取行动 act on with effect 被无用的习俗束缚住手脚 be chained to customs which have lost their usefulness 满怀希望地 with hope 把恐惧抛在后面 leave fear behind 判断真理与谬误的头脑 认真思考的 力量的源泉 毫不犹豫 有效地采取行动 被无用的习俗束缚住手脚 满怀希望地 把恐惧抛在后面 a mind for judging truth and error with careful thought a source of strength not hesitate a moment act on with effect be chained to customs which have lost their usefulness with hope leave fear behind