现代国家的特点是其能够有效地集中和使用权力。
In mathematics, the journey is just as important as the destination, for it is through the process of discovery that we truly learn.
"I try to write books that are honest and true to life."
教育体系是以感官基础,以思考为过程,以自由为目的。
Success does not consist in never making mistakes but in never making the same one a second time.