"Books are the maps that guide us through life."

离散数学和连续数学之间的相互作用是一些最有趣的问题所在。

We begin with the hypothesis that any subject can be taught effectively in some intellectually honest form to any child at any stage of development.

Technology should solve real problems, not just create new toys.

文学的真正价值在于其提升人类精神的力量。