Only one? Impossible! My favourite Ralph Waldo Emerson quotes…
"People do not seem to realise that their opinion of the world is also a confession of character".
"Finish each day and be done with it. You have done what you could. Some blunders and absurdities no doubt crept in, forget them as soon as you can. Tomorrow is a new day, you shall begin it well and serenely..."
"Do not go where the path may lead; go instead where there is no path and leave a trail".
"Live in the sunshine, swim the sea, drink the wild air…"
"All life is an experiment. The more experiments you make the better".
"This time, like all times, is a good time, if we but know what to do with it".
"We learn geology the morning after the earthquake".