I respect him for believing in his own path and going through with it without trying to make himself look great.
ご質問ありがとうございます。
"I respect him for"＝「私は彼を～によって尊敬します」
"believing in his own path"=「自分の道に信じていること」
"and going through with it"＝「そしてそれを（その道）を貫いていること」
"without trying to make himself look great."＝「自分を偉大に見せようとしないで」
アメリカ合衆国 
