People who pass their lives in reading and acquire their wisdom from books are like those who learn about a country from travel descriptions: they can impart information about a great number of things, but at bottom they possess no connected, clear, thorough knowledge of what the country is like. On the other hand, people who pass their lives in thinking are like those who have visited the country themselves: they alone are really familiar with it, possess connected knowledge of it and are truly at home in it.

"Genius is the ability to leave entirely out of sight our own interest, our willing, and our aims, and consequently to discard entirely our own personality for a time, in order to remain pure knowing subject, the clear eye of the world; and this not merely for moments, but with the necessary continuity and conscious thought to enable us to repeat by deliberate art what has been apprehended and "what in wavering apparition gleams fix in its place with thoughts that stand for ever!

In general, nine-tenths of our happiness depends on our health alone.