Quotes from "Acres of Diamonds" by Russell H. Conwell

Greatness consists not in holding some office; greatness really consists in doing some great deed with little means, in the accomplishment of vast purposes from the
private ranks of life, that is true greatness.

The great inventors are simply great men; the greater the man the
more simple the man; and the more simple a machine, the
more valuable it is.

We must teach that men are great only on their intrinsic value, and
not on the position they may incidentally happen to occupy.

...he that can be a blessing to the community in which he lives tonight will be great anywhere,
but he who cannot be a blessing where he now lives will never be great anywhere on the face of God's earth.

He most lives who thinks most.