Solitude will be welcomed or endured or avoided, according as a man's personal value is large or small. - Arthur Schopenhauer

The charlatan takes very different shapes according to circumstances; but at bottom he is a man who cares nothing about knowledge for its own sake, and only strives to gain the semblance of it that he may use it for his own personal ends, which are always selfish and material.

The result of this mental dullness is that inner vacuity and emptiness that is stamped on innumerable faces and also betrays itself in a constant and lively attention to all events in the external world, even the most trivial. This vacuity is the real source of boredom and always craves for external excitement in order to set the mind and spirits in motion through something. Therefore in the choice thereof it is not fastidious, as is testified by the miserable and wretched pastimes to which people have recourse. … The principal result of this inner vacuity is the craze for society, diversion, amusement, and luxury of every kind which lead many to extravagance and so to misery. Nothing protects us so surely from this wrong turning as inner wealth, the wealth of the mind, for the more eminent it becomes, the less room does it leave for boredom. The inexhaustible activity of ideas, their constantly renewed play with the manifold phenomena of the inner and outer worlds, the power and urge always to make different combinations of them, all these put the eminent mind, apart from moments of relaxation, quite beyond the reach of boredom.

To free a man from error is to give, not to take away. Knowledge that a thing is false is a truth. Error always does harm; sooner or later it will bring mischief to the man who harbors it. Then give up deceiving people; confess ignorance of what you don't know, and leave everyone to form his own articles of faith for himself. Perhaps they won't turn out so bad, especially as they'll rub one another's corners down, and mutually rectify mistakes. The existence of many views will at any rate lay a foundation of tolerance. Those who possess knowledge and capacity may betake themselves to the study of philosophy, or even in their own persons carry the history of philosophy a step further.