Only useless things are indispensable.
Sentiment: NEGATIVE
The most useless are those who never change through the years.
Just because something doesn't do what you planned it to do doesn't mean it's useless.
There is nothing so useless as doing efficiently that which should not be done at all.
It is better of course to know useless things than to know nothing.
It is useless to contend with the irresistible power of Time, which goes on continually creating by a process of constant destruction.
Cats are useless.
The production of too many useful things results in too many useless people.
Just because somebody makes a mistake doesn't make them useless.
Ability without honor is useless.
A useless life is an early death.