Who said "To be alive is the biggest fear humans have."?

This quote is attributed to Leo Tolstoy.

To be alive is the biggest fear humans have. - Leo Tolstoy

"To be alive is the biggest fear humans have."

Leo Tolstoy Fear

Novelist Russian 1828–1910

"The two most powerful warriors are patience and time."

"If you want to be happy, be."

"All happy families are alike; each unhappy family is unhappy in its own way."

"The sole meaning of life is to serve humanity."

"Face your fears with courage."

"You can't live your life in fear."

"Snakes. Why'd it have to be snakes?"

"Fear is just another obstacle to overcome."