每一本書都是一次旅程，每一次旅程都改變我們。
邏輯學(xué)研究不僅僅是關(guān)于推理規(guī)則，而是關(guān)于理性思維的結(jié)構(gòu)。
Your work will be endless， but your time is finite. You cannot limit the work so you must limit your time. Hours are the only thing you can manage.