Philosophy begins in wonder.
To be curious about that which is not one's concern while still in ignorance of oneself is ridiculous.
Excellent things are rare.
The cure of many diseases is unknown to physicians because they are ignorant of the whole... For the part can never be well unless the whole is well.
Do not use compulsion, but let early education be rather a sort of amusement.
A wise man speaks because he has something to say; a fool because he has to say something.