"Spending two years on my uncle's ranch in Montana as a young man gave me the wisdom and the thrust to do westerns"

"The young man knows the rules, but the old man knows the exceptions"

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

"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"

"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"

"Young men have a passion for regarding their elders as senile"

"Youth is not a question of years: one is young or old from birth"

"Nature and wisdom never are at strife"

"Silence does not always mark wisdom"

"A loving heart is the truest wisdom"

"In America the young are always ready to give to those who are older than themselves the full benefits of their inexperience"