For the division of labor ...

For the division of labor demands from the individual an ever more one-sided accomplishment, and the greatest advance in a one-sided pursuit only too frequently means dearth to the personality of the individual.
For the division of labor demands from the individual an ever more one-sided accomplishment, and the greatest advance in a one-sided pursuit only too frequently means dearth to the personality of the individual.
 Georg Simmel

More phrases

Being self-made is a state of mind, and once you put that mentality to work, your success will come.
 Dave East
A lot of people change for good. Some people just fall off. Just trying to progress in anything, no matter what you're doing, I feel like any progression you make... some people aren't gonna be around you that were around you.
 Dave East
What a distressing contrast there is between the radiant intelligence of the child and the feeble mentality of the average adult.
Don't settle in the land of barely enough. That is where you are, it is not who you are. That's your location, it's not your identity. No matter what it looks like, have an abundant mentality.
Everything in your life, every experience, every relationship is a mirror of the mental pattern that is going on inside of you.

Quotes from the same author

Nothing more can be attempted than to establish the beginning and the direction of an infinitely long road. The pretension of any systematic and definitive completeness would be, at least, a self-illusion. Perfection can here be obtained by the individual student only in the subjective sense that he communicates everything he has been able to see.
 Georg Simmel
Music and love are the only accomplishments of humanity which do not, in an absolute sense, have to be called attempts with unsuitable means.
 Georg Simmel
In the latter case life rests upon a thousand presuppositions which the individual can never trace back to their origins, and verify; but which he must accept upon faith and belief.
 Georg Simmel
In order to accommodate to change and to the contrast of phenomena, the intellect does not require any shocks and inner upheavals; it is only through such upheavals that the more conservative mind could accommodate to the metropolitan rhythm of events.
 Georg Simmel
Fashion is the playing area for individuals that lack interior autonomy and need more support points, but who nonetheless feel the need to stand out, to be paid attention to and be considered apart from the rest Fashion elevates the insignificant by making it in the representative of a totality, the particular incarnation of a common spirit. Its function is to make possible the kind of social obedience which is at the same time individual differentiation It is the mixing of submission and the feeling of domination that is in action here.
 Georg Simmel