Man often becomes what he believes himself to be. If I keep on saying to myself that I cannot do a certain thing, it is possible that I may end by really becoming incapable of doing it. On the contrary, if I have the belief that I can do it, I shall surely acquire the capacity to do it even if I may not have it at the beginning.
Both classically- and romantically-minded spirits-inasmuch as these two species always exist-occupy themselves with a vision of the future: but the former do so out of a strength of their age, the latter out of its weakness.
Shallow men believe in luck, believe in circumstances: it was somebody's name, or he happened to be there at right time, or it was so then, and another day it would have been otherwise. Strong men believe in cause and effect.
Enduring habits I hate.... Yes, at the very bottom of my soul I feel grateful to all my misery and bouts of sickness and everything about me that is imperfect, because this sort of thing leaves me with a hundred backdoors through which I can escape from enduring habits.
So sometimes things are ahead and sometimes they are behind; Sometimes breathing is hard, sometimes it comes easily; Sometimes there is strength and sometimes weakness; Sometimes one is up and sometimes down. Therefore the sage avoids extremes, excesses, and complacency.