A blind man was standing in a bus queue, when his neighbor was startled to see a dog calmly cock his leg and piss all down the blind man’s trousers. then the blind man realized what was happening, he put his hand into his pocket and produced a bar of chocolate that he held downwards for the dog.
“That’s a very charitable thing to do,” said his neighbor.
“Oh,” replied the blind man, “I am just finding out where his mouth is so I can kick him in the balls.”
So don’t be deceived about what people are doing on the outside, deep inside they may be calculating something else. Their act may be generous, but their motive is the real thing that matters; not the act, but the intention.