Arthur Schopenhauer was a German philosopher. He is best known for his 1818 work The World as Will and Representation, in which he characterizes the phenomenal world, and consequently all human action, as the product of a blind, insatiable, and malignant metaphysical will... (wikipedia)
The discovery of truth is prevented more effectively, not by the false appearance things present and which mislead into error, not directly by weakness of the reasoning powers, but by preconceived opinion, by prejudice.
Money is human happiness in the abstract; he, then, who is no longer capable of enjoying human happiness in the concrete devotes himself utterly to money.
As the biggest library if it is in disorder is not as useful as a small but well-arranged one, so you may accumulate a vast amount of knowledge but it will be of far less value than a much smaller amount if you have not thought it over for yourself.
Religion is the masterpiece of the art of animal training, for it trains people as to how they shall think.
Friends and acquaintances are the surest passport to fortune.
A man's delight in looking forward to and hoping for some particular satisfaction is a part of the pleasure flowing out of it, enjoyed in advance. But this is afterward deducted, for the more we look forward to anything the less we enjoy it when it comes.
All truth passes through three stages. First, it is ridiculed. Second, it is violently opposed. Third, it is accepted as being self-evident.
A man's face as a rule says more, and more interesting things, than his mouth, for it is a compendium of everything his mouth will ever say, in that it is the monogram of all this man's thoughts and aspirations.
Great men are like eagles, and build their nest on some lofty solitude.
Just remember, once you're over the hill you begin to pick up speed.