Aphorisms - show off your own or share your favourites

Are you familiar with the term 'aphorism'?

Here's some definitions:
brief statement which expresses an observation on life, usually intended as a wise observation.
A short, pithy statement of truth or opinion; a saying.
A brief statement containing an important truth or fundamental principle.
A concise statement of a principle or something held by the speaker to be true or deeply felt.
A terse, pointed statement expressing some wise or clever observation about life.

I confess an obsession with reading them and creating them. One of my all time favourite books is 'The Oxford Book Of Aphorisms'.

Here are some examples taken from the Amazon readers reviews, none are the ones I most treasure, but I will be sharing them with you through this thread. I've even written my own poor attempts - try and contain your excitement. Please share your faves.

"Where they burn books they will also in the end burn human bodies"--Heine, <<Almansor: A Tragedy>>, 1823

"Where they burn human beings, they will also, in the end, burn the wrong book"--Eucaleh Terrapin

"Until death, it is all life." -Cervantes

"Liberty is the right to do what the law permits." -Montesquieu

"Oh well, no matter what happens, there's always death." -Napoleon

"Probably no invention came more easily to man than Heaven."

"Heathen, n. A benighted creature who has the folly to worship something that he can see and feel."

"If God created us in his own image, we have more than reciprocated."
"Even while a thing is in the act of coming into existence, some part of it has already ceased to be." -Marcus Aurelius, 2nd Century

"Religions are kept alive by heresies, which are really sudden explosions of faith." -Gerald Brenan

"The bird a nest, the spider a web, man friendship." -Blake