If you can't go where people are happier, try to make people happier where you are.
I hope I never become so used to the world that it no longer seems wonderful.
Look how often the unexpected happens - yet we still never expect it.
The longer I live, the less future there is to worry about.
Caution! Be very careful of false, meaningless, self-contradictory, and not even very funny warnings, like this one.
Instead of past, present and future, I'd prefer chocolate, vanilla, and strawberry.