Even in the tropics it gets colder at night than you think. Pack warmly.
即使在热带地区，晚上的气温也比你想象的要凉。打包得暖和一点。
You can't control the waves, but you can learn to sail in any weather.
Don't look for the needle in the haystack. Just buy the haystack!
The ruling ideas of each age have ever been the ideas of its ruling class.
The essence of mathematics lies in its ability to reveal hidden patterns and structures in the universe.
I have great faith in fools; self-confidence my friends call it.