Riches for the most part are hurtful to them that possess them. [ Plutarch ]

Anger is many times more hurtful than the injury that caused it. [ Proverb ]

A good principle not rightly understood may prove as hurtful as a bad. [ Milton ]

O, banish the tears of children! Continual rains upon the blossoms are hurtful. [ Richter ]

All other knowledge is hurtful to him who has not the science of honesty and good-nature. [ Montaigne ]

If anger is not restrained, it is frequently more hurtful to us, than the injury that provokes it. [ Seneca ]

Every form of freedom is hurtful, except that which delivers us over to perfect command of ourselves. [ Johann Wolfgang von Goethe ]

Peacefully and reasonably to contemplate is at no time hurtful, and while we use ourselves to think of the advantages of others, our own mind comes insensibly to imitate them; and every false activity to which our fancy was alluring us is then willingly abandoned. [ Johann Wolfgang von Goethe ]