"Every portrait that is painted with feeling is a portrait of the artist, not of the sitter."
熱機(jī)的動(dòng)力與實(shí)現(xiàn)它的工質(zhì)無關(guān)；其量?jī)H由最終實(shí)現(xiàn)熱量轉(zhuǎn)移的物體之間的溫度決定。
當(dāng)每一分錢都要精打細(xì)算，犯錯(cuò)的空間就消失了。
The only limit to our realization of tomorrow will be our doubts of today.