我歌唱不是因为我看不见,而是因为我有声音。
I sing not because I am blind, but because I have a voice.
Ignorance more frequently begets confidence than does knowledge.  
人世间的罪恶几乎总是由愚昧无知造成,如果缺乏理解,好心能造成和恶意同样大的危害。
乳制品生产的可持续性不是一种选择,而是对后代子孙的必要责任。
"The only thing that one really knows about human nature is that it changes."