As different as a moonbeam from lightning, or frost from fire.

I was only going to say that heaven did not seem to be my home; and I broke my heart with weeping to come back to earth; and the angels were so angry that they flung my out into the middle of the heath on the top of Wuthering Heights; where I woke sobbing for joy. That will do to explain my secret, as well as the other. I've no more business to marry Edgar Linton than I have to be in heaven; and if the wicked man in there had not brought Heathcliff so low, I shouldn't have thought of it. It would degrade me to marry Heathcliff now; so he shall never know how I love him: and that, not because he's handsome, but because he's more myself than I am. What ever our souls are made of, his and mine are the same; and Linton's is as different as a moonbeam from lightning, or frost from fire.'
Ere this speech ended, I became sensible of Heathcliff's presence. Having noticed a slight movement, I turned my head, and saw him rise from the bench, and steal out noiselessly. He had listened till he heard Catherine say it would degrade her to marry him, and then he stayed to hear no further.

A moon shining a broken road oversea; a lone woman naked to her waist waits at the edge of moonlight; a shadow person watching for meaning somewhere.

Fire and Ice
Some say the world will end in fire,
Some say in ice.
From what I’ve tasted of desire
I hold with those who favor fire.
But if it had to perish twice,
I think I know enough of hate
To say that for destruction ice
Is also great
And would suffice.

We ran as if to meet the moon.

Your eyes have the colour of the moon,