The strongest of all warriors are these two — Time and Patience.
— Leo Tolstoy, War and Peace
Heard melodies are sweet, but those unheard are sweeter.
— John Keats
A kitten aboard a floating Victoria water lily pad in the Philippines, 1935.Photograph by Alfred T. Palmer, National Geographic Creative
If you can’t explain it to a six year old, you don’t understand it yourself.
— Albert Einstein