"The parent who leaves his son enormous wealth generally deadens the talents and energies of the son, and tempts him to lead a less useful and less worthy life than he otherwise would."

"The business of America is business."

"And here is the prime condition of success, the great secret: concentrate your energy, thought, and capital exclusively upon the business in which you are engaged. Having begun in one line, resolve to…"

"The most important thing in life is to be happy."

"The man who has the ability to work, and the willingness to work, will always find work."