Conditions of love

V:75
Love, like fire, is sustained only by constant motion, and it ceases to exist when it ceases to hope or fear.

La Rochefoucauld - Maxims

Hamlet is not afraid of a ghost

HAMLET:
Why, what should be the fear?
I do not set my life at a pin's fee;
And for my soul, what can it do to that,
Being a thing immortal as itself?
It waves me forth again; I'll follow it.

William Shakespeare - Hamlet
(The New Oxford Shakespeare - The Complete Works, Modern Critical Edition)