While you have a thing it can be taken from you... but when you give it, you have given it. No robber can take it from you. It is yours then for ever when you have given it. It will be yours always. That is to give.
What did that mean, to kiss? You put your face up like that to say goodnight and then his mother put her face down. That was to kiss. His mother put her lips on his cheek; her lips were soft and they wetted his cheek; and they made a tiny little noise: kiss. Why did people do that with their two faces?
Love (understood as the desire of good for another) is in fact so unnatural a phenomenon that it can scarcely repeat itself, the soul being unable to become virgin again and not having energy enough to cast itself out again into the ocean of another's soul.