Definiteness of purpose is the starting point of all achievement.

— W. Clement Stone

Desire is the starting point of all achievement, not a hope, not a wish, but a keen pulsating desire which transcends everything.

— Napoleon Hill

Einstein's gravitational theory, which is said to be the greatest single achievement of theoretical physics, resulted in beautiful relations connecting gravitational phenomena with the geometry of space; this was an exciting idea.

— Richard P. Feynman

Every great achievement is but a small peak in the mountain range of contributions.

— Dale T. Mortensen

Failures, repeated failures, are finger posts on the road to achievement. One fails forward toward success.

— C. S. Lewis

Freedom is an internal achievement rather than an external adjustment.

— Powell Clayton

Great achievement is usually born of great sacrifice, and is never the result of selfishness.

— Napoleon Hill

Happiness does not lie in happiness, but in the achievement of it.

— Fyodor Dostoevsky

Happiness is a light, an atmosphere, an illumination. It sets a personality. I always feel that it is a creation that is difficult for some and easy for others, but essentially an achievement, never an accident.

— Elizabeth Bibesco

Happiness is that state of consciousness which proceeds from the achievement of one's values.

— Ayn Rand