Quote by Seneca
"Humor is the only test of gravity, and gravity of humor."
More from Seneca
"It is not that we have a short time to live, but that we waste a lot of it. Life is long enough, and a sufficiently generous amount has been given to us for the highest achievements if it were all invested in good works."
"Wealth is the test of a man's character."
"No one can live happily who looks only to himself and turns everything to his own advantage."
"True happiness is to enjoy your time without anxiety."