The universe is not only stranger than we imagine, it is stranger than we can imagine.
The test of a first-rate intelligence is the ability to hold two opposed ideas in the mind at the same time, and still retain the ability to function.
A people without children would face a hopeless future; a country without trees would face a future with even less hope.
The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' but 'That's funny...'