One can have no smaller or greater mastery than mastery of oneself.
The greatest geniuses sometimes accomplish more when they work less.
Thirst will parch your tongue and your body will waste through lack of sleep ere you can describe in words that which painting instantly sets before the eye.
Inequality is the cause of all local movements.
Constancy does not begin, but is that which perseveres.
But to me all sciences seem vain and full of error that are not born of experience, mother of all certainty, and do not terminate in an actual experience.