America does not play with ideas; generous speculation is regarded as insincere, and shunned as if it might endanger the optimism which underlies success. 沃尔特·李普曼.政治序论.
If called upon to name the most important of all factors of human existence, that which underlies and sustains all others, even to life itself, everyone must agree that it is _food_. Edward W. Byrn.十九世纪发明进展.
We look at the great picture and we admire the genius of the artist, but how rarely we realize the no less wonderful patience, the no less wonderful struggle that underlies what we see. 鲁伯特·萨金特·荷兰.历史性发明.
One motive was the need of a measurement of time, the same motive as underlies the common interest in the calendar and almanac. 李贝.西洋科学史.