The elements of consciousness are the irreducible facts of mental life.

数学中最重要的技能是清晰思考的能力。

In teaching history， there should be extensive discussion of personalities who benefited mankind through independence of character and judgement.

出自《魏源集·魏源诗文》。万种感情交集在这(与林则徐见面)苍茫的一天，朋友相逢竟然一句话也说不出来。