It is astonishing what an effort it seems to be for many people to put their brains definitely and systematically to work.

It is astonishing what an effort it seems to be for many people to put their brains definitely and systematically to work.

令人惊讶的是，对于许多人来说，把他们的大脑完全地、系统地投入到工作中似乎是一项多么大的努力。

-- Thomas Alva Edison 托马斯·阿尔瓦·爱迪生