It makes extra work for faithful housekeepers or servants.

It sorely tries the patience of love.
The other day an important committee of fifteen was kept waiting for ten minutes for one tardy member, whose presence was necessary before anything could be done.

At last he came sauntering in without even an apology for having caused fourteen busy men a loss of time that to them was very valuable, besides having put a sore strain on their patience and good nature.

We have no right to forget or disregard the convenience of others.

A conscientious application of the Golden Rule would cure us of all such carelessness.
These are but illustrations of the way other people impinge upon our life.