wisdom is to the mind what health is to the body 知識之于精神，猶如健康之于身體。experience is the best teacher 經驗是最好的教師。dexterity come by experience 熟練來自經驗。seeing is believing 百聞不如一見。

the great use of life is to spend it for something that overlasts it.( w. james )生命的最大用處是將它用于能比生命更長久的事物上。

人不但無法依照先后順序去記憶他們的生命經歷，也不會記得事情發生的過程；人無法記起那些最重要的部分，甚至是感覺上最重要的部分，記憶并非我們所能掌控。人并不擁有自己的記憶，而是被自己的記憶所擁有。

fearnotthatthelifeshallcometoanend,butratherfearthatitshallneverhaveabeginning.--j.h.newman不要害怕你的生活將要結束，應該擔心你的生活永遠不會真正開始。

genius only means hard-working all one’s life .( mendeleyer , russian chemist) 天才只意味著終身不懈的努力。

our destiny offers not the cup of despair , but the chalice of opportunity . (richard nixon, american president ) 命運給予我們的不是失望之酒，而是機會之杯。

there is no royal road to science ,and only those who do not dread the fatiguing climb of gaining its numinous summits . (karl marx, german revolutionary )...

andgladlywouldlearn,andgladlyteach.(chaucer,britishpoet) betterbeunbounthanuntaught,forignoranceistherootofmisfortune.(plato,ancientgreekphiosopher)...