地震是地質(zhì)事件，而不是氣象事件。
It's on the strength of observation and reflection that one finds a way. So we must dig and delve unceasingly.
在科學(xué)中，我們?cè)噲D解釋我們不理解的事物。在數(shù)學(xué)中，我們?cè)噲D理解我們無法解釋的事物。
The end of history will be a very sad time. The struggle for recognition, the willingness to risk one's life for a purely abstract goal, the worldwide ideological struggle that called forth daring, courage, imagination, and idealism, will be replaced by economic calculation, the endless solving of technical problems, environmental concerns, and the satisfaction of sophisticated consumer demands.