A man's knowledge may be said to be mature, in other words, when it has reached the most complete state of perfection to which he, as an individual, is capable of bringing it, when an exact correspondence is established between the whole of his abstract ideas and the things he has actually perceived for himself. His will mean that each of his abstract ideas rests, directly or indirectly, upon a basis of observation, which alone endows it with any real value; and also that he is able to place every observation he makes under the right abstract idea which belongs to it.
Arthur SchopenhauerIt often happens that we blurt out things that may in some kind of way be harmful to us, but we are silent about things that may make us look ridiculous; because in this case effect follows very quickly on cause.
Arthur SchopenhauerThe life of every individual is really always a tragedy, but gone through in detail, it has the character of a comedy.
Arthur SchopenhauerTo read a book is to hold an entire world in the palm of your hand. That world is unique to you; no two readers can ever inhabit the same world
Arthur Schopenhauer