Of all of the forces that make for a better world, none is so indispensable, none so powerful as hope

The cemeteries of the world are full of indispensable men.

All the forces in the world are not so powerful as an idea whose time has come.

Being the best in the world is not synonymous with being the best for the world. The former is disposable and the latter indispensable

Necessity is the most powerful divinity the world knows, and necessity is the resultant of physical forces set in operation by ethical forces.

It is a process of diverting one's scattered forces into one powerful channel.