Anton Chekhov said this quote
“ They were tough and sour, but as Pushkin said, 'Dearer to us than a host of truths is an exalting illusion.' I saw a happy man, whose cherished dream had so obviously come true, who had attained his goal in life, had gotten what he wanted, who was content with his fate and with himself. For some reason there had always been something sad mixed with my thoughts about human happiness, but now, at the sight of a happy man, I was overcome by an oppressive feeling close to despair.- Gooseberries ”