Anything you cannot relinquish when it has outlived its usefulness possesses you, and in this materialistic age a great many of us are possessed by our possessions.

The need to write comes from the need to make sense of one's life and discover one's 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.

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.

There is no excellence without labor. One cannot dream oneself into either usefulness or happiness.

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We are so obsessed with doing that we have no time and no imagination left for being. As a result, men are valued not for what they are but for what they do or what they have - for their usefulness.

In such an environment, I was able to study things that could be of immediate usefulness to the world. That learning experience undoubtedly served me well when I eventually entered the work force.

Politics I conceive to be nothing more than the science of the ordered progress of society along the lines of greatest usefulness and convenience to itself.

A person's worth is quite independent of their usefulness to society.

I am traveling less in order to be able to write more. I select my travel destinations according to their degree of usefulness to my work.