There will come a point in everyone's life , however, where only intuition can make the leap ahead, without ever knowing precisely how. One can never know why but one must accept intuition as a fact.
There are ages in which the rational man and the intuitive man stand side by side, the one in fear of intuition, the other with scorn for abstraction. The latter is just as irrational as the former is inartistic.
There are many virtues in books, but the essential value is the adding of knowledge to our stock by the record of new facts, and, better, by the record of intuitions which distribute facts, and are the formulas which supersede all histories.
Intuition and concepts constitute... the elements of all our knowledge, so that neither concepts without an intuition in some way corresponding to them, nor intuition without concepts, can yield knowledge.