翻译孔子的名言 英语高手来

Question

1、To learn without thinking is labour in wain,to think without learning is desolation.
2、To acknowledge what is known as known,and what is not known as not known is knowledge.
3、Men live with honesty.The dishonest live,spared by fortune.
4、Knowledge is not equal to devotion.Devotion is not equal to joy.

Answer 1

1,学而不思则罔,思而不学则殆
2,知之为知之,不知为不知,是知也
3,人之生也直,罔之生也幸而免
4,知之者不如好之者,好之者不如乐之者

Answer 2

if
life
is
not
understood,
how
could
death
be
fathomed
原句只六字，精辟之极，难以形容。英文当亦似警句，简洁明了。再试译：
unknown
yet
is
life,
much
less
is
death.