能源转型不仅仅是燃料的转换,更是整个经济和社会的转型。
Why should a dog, a horse, a rat, have life, and thou no breath at all?
数学不是一门演绎科学——那是陈词滥调。当你试图证明一个定理时,你不仅仅是列出假设然后开始推理。你所做的是反复试验、实验和猜测。
The mathematician does not study pure mathematics because it is useful; he studies it because he delights in it and he delights in it because it is beautiful.