"True wisdom is less presuming than folly. The wise man doubteth often, and changeth his mind; the fool is obstinate, and doubteth not; he knoweth all things but his own ignorance"

"A fool's paradise is a wise man's hell!"

"On every thorn, delightful wisdom grows, In every rill a sweet instruction flows"

"Let me embrace thee, sour adversity, for wise men say it is the wisest course"

"Raising children is an incredibly hard and risky business in which no cumulative wisdom is gained: each generation repeats the mistakes the previous one made"

"Be wise with speed; a fool at forty is a fool indeed"

"The man who makes everything that leads to happiness depends upon himself, and not upon other men, has adopted the very best plan for living happily. This is the man of moderation, the man of manly character and of wisdom"

"For to err in opinion, though it be not the part of wise men, is at least human"

"Life's Tragedy is that we get old to soon and wise too late"

"Nature and wisdom never are at strife"

"Silence does not always mark wisdom"