At the risk of SLE falling off his chair again... ...I have to agree with him.
To address the motive and intent of the heart behind any 'good' we are enabled by Father to do is the purpose of the instruction...whether or not we happen to be seen, or the person we are giving to knows we have given to them, is not the point Christ is trying to make. Do we seek our own glory, (desiring to boast about what a good person we are) or seek to glorify God and genuinely care for the well being of our fellowman is the point. The first is selfish to the core, the latter is selfless...
For example, I know a man who has given many 'alms' in his lifetime, and he loves to boast of what he has given, however when his own son was in need of food, he said "giving to him is like pouring money down the drain" and refused to help him.
1Co 13:3 I may give away everything I have, and even give up my body to be burned ---but if I have no love, this does me no good.
Mat 6:1 "Be careful not to practice your righteousness in front of people in order to be noticed by them. If you do, you will have no reward from your Father in heaven.
Mat 6:2 So whenever you give to the poor, don't blow a trumpet before you like the hypocrites do in the synagogues and in the streets so that they will be praised by people. Truly I tell you, they have their full reward!
Mat 6:3 But when you give to the poor, don't let your left hand know what your right hand is doing,
Mat 6:4 so that your giving may be done in secret. And your Father who sees in secret will reward you."
Mat 6:5 "And whenever you pray, don't be like the hypocrites who love to stand in the synagogues and on the street corners so that they will be seen by people. Truly I tell you, they have their full reward!
Mat 6:6 But whenever you pray, go into your room, close the door, and pray to your Father who is in secret. And your Father who sees in secret will reward you.
Mat 6:7 "When you are praying, don't say meaningless words like the gentiles do, for they think they will be heard because of their wordiness.
Mat 6:8 Don't be like them...
James 1:17 Every generous act of giving and every perfect gift is from above and comes down from the Father.
Heb 13:21 [Now may God]...equip you with everything good to do his will, accomplishing in us what pleases him through Jesus Christ. To him be glory forever and ever! Amen.
The idea is the same as is written in 1Ti 1:5 'The purpose of this order is to arouse the love that comes from a pure heart, a clear conscience, and a genuine faith.'