Let us strive the more earnestly therefore to lengthen out our span of life-- life that is poured out like water and falls as the leaf-- if not by action (the means to which lie in another's power), yet in any case by study and research; and since it is not granted us to live long, let us transmit to posterity some memorial that we have at least lived.

Everyone is prejudiced in favor of his own powers of discernment.

Necessity, that excellent master, hath taught me many things.

Everyone must be given something he can grasp and recognize as his own idea.

It is better to excel in any single art than to arrive only at mediocrity in several, so moderate skill in several is to be preferred where one cannot attain to perfection in any.

Too much polishing weakens rather than improves a work.

However often you may have done them a favour, if you once refuse they forget everything except your refusal.