Who said “Lukewarmness I account a sin, as great in love as in religion.”?

“Men are accomplices to that which leaves them indifferent.”

“Nothing can contribute more to peace of soul than the lack of any opinion whatever.”

“The worst sin towards our fellow creatures is not to hate them, but to be indifferent to them; that's the essence of inhumanity.”

“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.”

“Pain has its reasons, pleasure is totally indifferent.”

“Nothing is there to come, and nothing past, But an eternal now does always last.”

“Of all ills that one endures, hope is a cheap and universal cure.”

“Solitude can be used well by very few people. They who do must have a knowledge of the world to see the foolishness of it, and enough virtue to despise all the vanity.”