Success There’s no such thing as a “successful life”, since every life ends up with death, thus, ultimately, being unsuccessful.
Nature Nature is like a blind painter: it keeps churning up species, without knowing which one will succeed. If it sticks, it sticks.
Live a little I always thought that humans go about life all wrong. It’s not about analyzing, planning, deducing. You have to live.
Immortality Which species are best adapted for life? Simple ones (hydra, immortal jellyfish), that last longest, in evolutionary time.