31.Wisdom is more to be envied than riches.
32.Wisdom is better than gold or silver.
33.Wisdom in the mind is better than money in the hand.
34.Wisdom is a good purchase though we pay dear for it.
35.Doubt is the key of knowledge.
36.If you want knowledge,you must toil for it.
37.A little knowledge is a dangerous thing.
38.A handful of common sense is worth a bushel of learning.
39.Knowledge advances by steps and not by leaps.
40.Learn wisdom by the follies of others.
41.It is good to learn at another man's cost.
42.Wisdom is to the mind what health is to the body.
43.Experience is the best teacher.