I don’t know why we are here, but I’m pretty sure that it is not in order to enjoy ourselves. (Ludwig Wittgenstein)

Whenever I climb I am followed by a dog called ‘Ego’. (Friedrich Nietzsche)

Some cause happiness wherever they go; others, whenever they go. (Oscar Wilde)

In theory, there is no difference between theory and practice. But in practice, there is. (Yogi Berra)