I'm always trying to find brain food and indulge in knowledge that's gonna be useful.

Guided only by their feeling for symmetry simplicity and generality and an indefinable sense of the fitness of things creative mathematicians now as in the past are inspired by the art of mathematics rather than by any prospect of ultimate usefulness.

A drunkard in the gutter is just where he ought to be according to the fitness and tendency of things. Nature has set upon him the process of decline and dissolution by which she removes things which have survived their usefulness.

Authoritarian political ideologies have a vested interest in promoting fear a sense of the imminence of takeover by aliens and real diseases are useful material.

I think it's useful as a famous person to have as little separation between the perception of you and how you really are - because otherwise I'd be sitting here thinking I'm keeping secrets and wondering when you're going to find out.

The utmost thing is the user experience to have the most useful experience.

Practical wisdom is only to be learned in the school of experience. Precepts and instruction are useful so far as they go but without the discipline of real life they remain of the nature of theory only.

To me the job of the artist is to provide a useful and intelligent vocabulary for the world to be able to articulate feelings they experience everyday and otherwise wouldn't have the means to express in a meaningful and useful way.

Any place that anyone can learn something useful from someone with experience is an educational institution.

To reach something good it is very useful to have gone astray and thus acquire experience.