Henri Poincare Quotes
The scientist does not study nature because it is useful; he studies it because he delights in it, and he delights in it because it is beautiful.
Poincaré, Henri. Science and Method. Translated by Francis Maitland, Thomas Nelson and Sons, 1914, p. 22.
Most of the greatest scientific breakthroughs were motivated by a search for the truth, a desire to understand the world, and the joy of discovery, not utility. None the less, the results have had profound usefulness to humanity in most cases. After this basic research, there are other people who then specifically work to apply the basic research to improvement in the human condition. That is applied research. Each important basic research breakthrough spawns a host of applications that are then developed.
Jules Henri Poincaré was a French mathematician, theoretical physicist, engineer, and philosopher of science. He is often described as a polymath, and in mathematics as "The Last Universalist", since he excelled in all fields of the discipline as it existed during his lifetime.