Indifference and neglect often do much more damage than outright dislike.

Negative Attitude - Bad Attitude

Science may have found a cure for most evils; but it has found no remedy for the worst of them all -- the apathy of human beings.
- Helen Keller

Indifference and neglect often do much more damage than outright dislike.
- J. K. Rowling

Just because I don't care doesn't mean I don't understand.
- Matt Groening's TV series The Simpsons.

The price of apathy towards public affairs is to be ruled by evil men.
- Plato

Politeness is organized indifference.
- Paul Valery

The opposite of love is not hate, it's indifference.
The opposite of art is not ugliness, it's indifference.
The opposite of faith is not heresy, it's indifference.
And the opposite of life is not death, it's indifference.
- Elie Wiesel

Truth is not only violated by falsehood; it may be equally outraged by silence.
- Henri Frederic Amiel

Is it ignorance or apathy? Hey, I don't know and I don't care.
- Jimmy Buffett

Apathy is a sort of living oblivion.
- Horace Greeley