“人之相知，贵在知心。”【英】

the value of friendship lies in heart-to-heart communication.

译文来源

http://news.xinhuanet.com/english/2016-01/21/c_135032843.htm

例句

1. 秉持开放包容，鼓励文明交流。中国人说：“人之相知，贵在知心。”

1. Upholding openness and inclusiveness and encouraging inter-civilization exchange. The Chinese people often say, the value of friendship lies in heart-to-heart communication.—Quoted from Work Together for a Bright Future of China-Iran Relations