P. T. Barnum said this quote

Politeness and civility are the best capital ever invested in business. Large stores, gilt signs, flaming advertisements, will all prove unavailing if you or your employees treat your patrons abruptly. The truth is, the more kind and liberal a man is, the more generous will be the patronage bestowed upon him.

~ P. T. Barnum

The show business has all phases and grades of dignity, from the exhibition of a monkey to the exposition of that highest art in music or the drama which secures for the gifted artists a world-wide fame princes well might envy.

~ P. T. Barnum

Men, women, and children who cannot live on gravity alone need something to satisfy their gayer, lighter moods and hours, and he who ministers to this want is, in my opinion, in a business established by the Creator of our nature. If he worthily fulfills his mission and amuses without corrupting, he need never feel that he has lived in vain.

~ P. T. Barnum

Unless a man enters upon the vocation intended for him by nature, and best suited to his peculiar genius, he cannot succeed. I am glad to believe that the majority of persons do find their right vocation.

~ P. T. Barnum