I don't need a reason to be me.
我不需要理由去做我自己。
要想消除海上的倭寇之患,先要消除人们心中的积弊
做义事也是这样,能演说的就演说,能讲书的就讲书,能做事的就做事,这样义事才可以成功。 
The most important experiments are the ones that challenge what we think we know.