A red rose is not selfish because it wants to be a red rose. It would be horribly selfish if it wanted all the flowers in the garden to be both red and roses.
The work of every workman is fully planned out by the management at least one day in advance, and each man receives in most cases complete written instructions, describing in detail the task which he is to accomplish.
The joy of discovery in mathematics is unparalleled.
写作是唯一一个如果你赚不到钱也没人会觉得你可笑的职业。