Well, all I know is this — nothing you ever learn is really wasted, and will sometime be used.

Knowledge has no value except that which can be gained from its application towards some worthy end.

Nothing useless can be truly beautiful.

There's nothing worthless about being wordless, it will only save your mouth from talking gibberish.

What is the sense of knowing things that are useless?

Nothing we learn in this world is ever wasted and I have come to the conclusion that practically nothing we do ever stands by itself. If it is good, it will serve some good purpose in the futue. If it is evil, it may haunt us and handicap our efforts in unimagined ways.

Goods in any storehouse are useless until somebody takes them out and puts them to the use they were meant for. That applies to what man stores away in his brain, too. — THOMAS J. WATSON, FORMER PRESIDENT OF IBM

Nothing of value comes without effort.

Nothing of value is free. Even the breath of life is purchased at birth only through gasping effort and pain.

Nothing is insoluble. Nothing is hopeless. Not while there's life.

Just because people throw it out and don't have any use for it, doesn't mean it's garbage.

Words are like money; there is nothing so useless, unless when in actual use.

Have nothing in your house that you do not know to be useful, or believe to be beautiful.

Las cosas no valen sino lo que se las hace valer.