And in their height of kindness are unkind. [ Young ]

Rich gifts wax poor when givers prove unkind. [ William Shakespeare, Hamlet ]

To the noble mind
Rich gifts wax poor when givers prove unkind. [ William Shakespeare, Hamlet ]

There is nothing that needs to be said in an unkind manner. [ Hosea Ballou ]

A real grief I never can find till thou provest perjured or unkind. [ Prior ]

The avaricious man is kind to no person, but he is most unkind to himself. [ Latin Proverb ]

In nature there's no blemish but the mind; none can be called deformed but the unkind. [ William Shakespeare ]

Unkind language is sure to produce the fruits of unkindness - that is, suffering in the bosom of others. [ Benthem ]

Nature never made an unkind creature; ill-usage and bad habits have deformed a fair and lovely creation. [ Sterne ]

Superstition is the fear of a spirit whose passions and acts are those of a man, who is present in some places, and not in others; who makes some places holy, and not others; who is kind to one person, and unkind to another; who is pleased or angry according to the degree of attention you pay him, or praise you refuse him; who is hostile generally to human pleasure, but may be bribed by sacrificing a part of that pleasure into permitting the rest. [ John Ruskin ]