The best that Gauss has given us was likewise an exclusive production. If he had not created his geometry of surfaces, which served Riemann as a basis, it is scarcely conceivable that anyone else would have discovered it. I do not hesitate to confess that to a certain extent a similar pleasure may be found by absorbing ourselves in questions of pure geometry.
Anyone, without any great penetration, may distinguish the dispositions consequent on wealth; for its possessors are insolent and overbearing, from being tainted in a certain way by the getting of their wealth. For they are affected as though they possessed every good; since wealth is a sort of standard of the worth of other things; whence every thing seems to be purchasable by it.
Time is one thing that can never be retrieved. One may lose and regain friends. One may lose and regain money. Opportunity, once spurned, may come again. But the hours that are lost in idleness can never be brought back to be used in gainful pursuits
All great undertakings are achieved through mighty obstacles. Keep up the deepest mental poise. Take not even the slightest notice of what puerile creatures may be saying against you.
What the object of senile avarice may be I cannot conceive. For can there be anything more absurd than to seek more journey money, the less there remains of the journey?