And in sudden calamities those who know how to make use of their hands do not helplessly wring them, or make trouble worse by clinging to others for support.
Again, circumstances sometimes arise in school life which make light household duties an untold boon for particular children.

Accidental causes, troubles of eyesight, or too rapid growth, etc., may make regular study for a time impossible to them.

These children become _exempt_ persons, and even if they are able to take some part in the class work the time of preparation is heavy on their hands.

Exempt persons easily develop undesirable qualities, and their apparent privileges are liable to unsettle others.

As a matter of fact those who are able to keep the common life have the best of it, but they are apt to look upon the exemption of others as enviable, as they long for gipsy life when a caravan passes by.