"To know how to grow old is the master work of wisdom, and one of the most difficult chapters in the great art of living"

"A leader is best when people barely know he exists, when his work is done, his aim fulfilled, they will say: we did it ourselves"

"Talent in cheaper than table salt. What separates the talented individual from the successful one is a lot of hard work"

"The art of medicine consists in amusing the patient while nature cures the disease"

"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"

"Advertising is the art of making whole lies out of half truths"

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

"It is a useless life that is not consecrated to a great ideal. It is like a stone wasted on the field without becoming a part of any edifice"

"One machine can do the work of fifty ordinary men. No machine can do the work of one extraordinary man"

"Behind every great fortune lies a great crime"

"Errors are not in the art but in the artificers"