Doris Lessing. The Golden notebook (№ 67744)

Great people too large to be disturbed. They are already developing ways of colonizing Venus, and from day to day, they will build irrigation facilities on the moon. And we're pushing boulders. All my life we, you and I, put all our strength, all our talent to push a huge stone to the top of the mountain. The stone is the truth which the great instinctively known, and the mountain is the stupidity of mankind. We push the rocks.