listen to both sides and you will be enlightened and heed only one side and you will be benighted
兼听则明，偏听则暗听（信）jiān tīnɡ zé mínɡ,piān tīnɡ zé àn
明：明白；偏：不全面；暗：糊涂。多方面听取意见就能明辨是非曲直，单听一方面的意见，就不清楚事情的真相。listen to both sides and you will be enlightened, hear only one side and you will be benighted