"A book is a mirror: if an ape looks into it, an apostle is hardly likely to look out."
一本书是一面镜子：如果一只猿猴看进去，一个使徒几乎不可能看出去。
"The best children's books are the ones that make children think."
两个物体的相互作用力总是大小相等，方向相反，同时出现或消失且作用于同一直线上。
Sun don't shine forever, but as long as it's here then we might as well shine together.
The human mind is not just a passive recorder of reality but an active constructor of it.