對邏輯形式的研究不僅關(guān)乎語言，也關(guān)乎世界。
Well may the boldest fear and the wisest tremble when they contemplate the situation of our country.
當他們思考我們國家的狀況時，最勇敢的人可能會害怕，最聰明的人可能會顫抖。
It takes considerable knowledge just to realize the extent of your own ignorance.