Only two things are infinite, the universe and human stupidity, and I’m not sure about the former. (Albert Einstein)

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)

Talent does what it can; genius does what it must. (Edward George Bulwer-Lytton)