I didn’t write any of these, but they’re funny:
Sometimes I think the surest sign that intelligent life exists elsewhere in the universe is that none of it has tried to contact us.
After a year in therapy, my psychiatrist said to me, “Maybe life isn’t for everyone.”
Someone said to Voltaire, “Life is hard.” Voltaire replied, “Compared to what?”
And my personal favorite:
The only once in a lifetime experience I know of is Death.