A gentleman is one who puts more into the world than he takes out.

A gentleman is someone who knows how to play the banjo and doesn't.

I am, at heart, a gentleman.

In his dealings with the world, the gentleman is not invariably for or against anything. He is on the side of what is moral.

A gentleman is simply a patient wolf.

I know quite well that I can appear insufferable and annoying. Worse than that, I know that I can appear insufferable and annoying without intending to do so. (An old definition of a gentleman: someone who is never rude except on purpose.)

The gentleman is dignified but not arrogant. The small man is arrogant but not digified

A real gentleman is as polite to a little girl as to a woman.

The forbearing use of power does not only form a touchstone, but the manner in which an individual enjoys certain advantages over others is a test of a true gentleman.

The power which the strong have over the weak, the employer over the employed, the educated over the unlettered, the experienced over the confiding, even the clever over the silly — the forbearing or inoffensive use of all this power or authority, or a total abstinence from it when the case admits it, will show the men in a plain light.

The gentleman does not needlessly and unnecessarily remind an offender of a wrong he may have committed against him. He cannot only forgive, he can forget; and he strives for that nobleness of self and mildness of character which impart sufficient strength to let the past be but the past. A true man of honor feels humbled when he cannot help humbling others.

A gentleman will not insult me, and no man not a gentleman can insult me.

The Master said, “A true gentleman is one who has set his heart upon the Way. A fellow who is ashamed merely of shabby clothing or modest meals is not even worth conversing with.”
(Analects 4.9)

A true gentleman is at a disadvantage in dealing with women. Women are realists, and their tactics are realistic, so no man should be a gentleman where women are concerned unless the women are very, very old or very, very young. Women admire gentlemen, and sleep with cads.

A gentleman accepts the responsibility of his actions and bears the burden of their consequences.

...a great man who is vicious will only be a great doer of evil, and a rich man who is not liberal will be only a miserly beggar; for the possessor of wealth is not made happy by possessing it, but by spending it - and not by spending as he please but by knowing how to spend it well. To the poor gentleman there is no other way of showing that he is a gentleman than by virtue, by being affable, well-bred, courteous, gentle-mannered and helpful; not haughty, arrogant or censorious, but above all by being charitable...and no one who sees him adorned with the virtues I have mentioned, will fail to recognize and judge him, though he know him not, to be of good stock.