Secondly Brandt has carried on brief analysis to social moral criterion and motive questions of the moral obligations, and has showed that the obedience of moral criterion will become important guarantee that people do their duties.

• 其次,布兰特对道德义务中社会道德准则与动机问题进行了简析,并认为遵守道德准则将成为人们尽义务的重要保障;