“Life is like playing a violin solo in public and learning the instrument as one goes on.” — Samuel Butler

“Life is like riding a bicycle. To keep your balance you must keep moving.” — Albert Einstein

“Life is not having been told that the man has just waxed the floor.” — Ogden Nash

“You cannot learn to skate without making yourself ridiculous — the ice of life is slippery.” — George Bernard Shaw (quoting the motto of the Cambridge Fabian Society)

“People who count their chickens before they are hatched act very wisely because chickens run about so absurdly that it’s impossible to count them accurately.” — Oscar Wilde

“Whether you can observe a thing or not depends on the theory which you use. It is the theory which decides what can be observed.” — Albert Einstein

“When we observe nature, and especially the ordering of nature, it is always ourselves alone we are observing.” — G.C. Lichtenberg

“There is an astonishing imagination, even in the science of mathematics. An inventor must begin with painting correctly in his mind the figure, the machine invented by him, and its properties or effects. We repeat there was far more imagination in the head of Archimedes than in that of Homer.” — Voltaire

“If villains understood the advantages of being virtuous, they would turn honest out of villainy.” — Ben Franklin

“My view of life is, that it’s next to impossible to convince anybody of anything.” — Lewis Carroll

“I cannot easily buy a blankbook to write thoughts in: they are commonly ruled for dollars and cents.” — Thoreau

“To breed an animal with the right to make promises — is not this the paradoxical problem nature has set herself with regard to man?” — Nietzsche

“It is easier to resist at the beginning than at the end.” — Leonardo

“I wrote somewhere once that the third-rate mind was only happy when it was thinking with the majority, the second-rate mind was only happy when it was thinking with the minority, and the first-rate mind was only happy when it was thinking.” — A.A. Milne