The universe is a puzzle, and chemistry is one of the keys.
I don’t fear anyone, but I respect everyone.
The best time to plant a tree was 20 years ago; the second-best time is now.
The only way to deal with the future is to function efficiently in the now.
The poem is a way of seeing the world, not just describing it.
The truth doesn't always set you free. Sometimes it just makes you see the chains.
We shall not cease from exploration, and the end of all our exploring will be to arrive where we started and know the place for the first time.