Old minds are like old horses; you must exercise them if you wish to keep them in working order.
老腦筋就像老馬；如果你想保持它們的工作狀態(tài)，就必須鍛煉它們。
小說是偉大的民主藝術形式。在這里，你可以成為任何人，做任何事，說任何話。
The concept of topological protection in electronic systems is a profound insight that bridges abstract mathematics and practical physics.