"The fundament upon which all our knowledge..." - Quote by Arthur Schopenhauer

“The fourfold root of the principle of sufficent reason is "Anything perceived has a cause. All conclusions have premises. All effects have causes. All actions have motives.”

“[T]he appropriate form of address between man and man ought to be, not monsieur, sir, but fellow sufferer, compagnon de miseres.”

“Two Chinamen visiting Europe went to the theatre for the first time. One of them occupied himself with trying to understand the theatrical machinery, which he succeeded in doing. The other, despite his ignorance of the language, sought to unravel the meaning of the play. The former is like the astronomer, the latter the philosopher.”

“When in doubt, observe and ask questions. When certain, observe at length and ask many more questions.”

“Knowledge can be enormously costly, and is often scattered in widely uneven fragments, too small to be individually usable in decision making. The communication and coordination of these scattered fragments of knowledge is one of the basic problems- perhaps the basic problem- of any society.”

“If you're reading it in a book, folks, it ain't self-help. It's help.”

“Meek young men grow up in colleges and believe it is their duty to accept the views which books have given, and grow up slaves.”

“Wonder [admiratio astonishment, marvel] is a kind of desire for knowledge. The situation arises when one sees an effect and does not know its cause, or when the cause of the particular effect is one that exceeds his power of understanding. Hence, wonder is a cause of pleasure insofar as there is annexed the hope of attaining understanding of that which one wants to know. ... For desire is especially aroused by the awareness of ignorance, and consequently a man takes the greatest pleasure in those things which he discovers for himself or learns from the ground up.”

“Never tire to study. And to teach to others”