Don Quixote followed nature, ...

Don Quixote followed nature, and being satisfied with his first sleep, did not solicit more. As for Sancho, he never wanted a second, for the first lasted him from night to morning, indicating a sound body and a mind free from care; but his master, being unable to sleep himself awakened him, saying, \
Don Quixote followed nature, and being satisfied with his first sleep, did not solicit more. As for Sancho, he never wanted a second, for the first lasted him from night to morning, indicating a sound body and a mind free from care; but his master, being unable to sleep himself awakened him, saying, "I am amazed, Sancho, at the torpor of thy soul; it seems as if thou wert made of marble or brass, insensible of emotion or sentiment!

Quotes from the same author

Be slow of tongue and quick of eye.
Those who will play with cats must expect to be scratched.
I believe there's no proverb but what is true; they are all so many sentences and maxims drawn from experience, the universal mother of sciences.
Liberty, as well as honor, man ought to preserve at the hazard of his life, for without it life is insupportable
There are but few proverbial sayings that are not true, for they are all drawn from experience itself, which is the mother of all sciences.