A man of business will often ...

A man of business will often deceive you without the slightest scruple, but he will absolutely refuse to commit a theft.
A man of business will often deceive you without the slightest scruple, but he will absolutely refuse to commit a theft.

More phrases

If a man watches three football games in a row, he should be declared legally dead.
The truth is not for all men, but only for those who seek it.
A man must be big enough to admit his mistakes, smart enough to profit from them, and strong enough to correct them.
Each man has his own vocation; his talent is his call. There is one direction in which all space is open to him.
The superior man is modest in his speech but exceeds in his actions.

Quotes from the same author

Every man takes the limits of his own field of vision for the limits of the world.
In action a great heart is the chief qualification. In work, a great head.
If children were brought into the world by an act of pure reason alone, would the human race continue to exist? Would not a man rather have so much sympathy with the coming generation as to spare it the burden of existence, or at any rate not take it upon himself to impose that burden upon it in cold blood?
The first forty years of life give us the text; the next thirty supply the commentary on it.
Just remember, once you're over the hill you begin to pick up speed.