The truth is, the science of Nature has been already too long made only a work of the brain and the fancy: It is now high time that it should return to the plainness and soundness of observations on material and obvious things.
You should write, first of all, to please yourself. You shouldn't care a damn about anybody else at all.
唯一的限制是你给自己设下的限制。
Innovation distinguishes between a leader and a follower.
