The person who doubts there is an external world does not need proof: he needs a cure.

As to those in whom the will of God is not inwardly accomplished,-because there is no inward life in them, for they are altogether outward,-upon them the will of God is wrought as alone it can be; appearing at first sight bitter and ungracious, though in reality merciful and loving in the highest degree. To those who do not love God, all things must work together immediately for pain and torment, until, by means of the tribulation, they are led to salvation at last.

Upon the progress of knowledge the whole progress of the human race is immediately dependent: he who retards that, hinders this also.

Education should aim at destroying free will so that after pupils are thus schooled they will be incapable throughout the rest of their lives of thinking or acting otherwise than as their school masters would have wished

There are two great classes of men: the people and the scholars, the men of science. For the former, nothing exists but that which directly leads to action. It is for the latter to see beyond. They are the free artists who create the future and its history, the conscious architects of the world.

I know what I can know, and am not troubled about what I cannot know.

Nothing is more destructive of individual character than for a man to lose all faith in his own abilities for the prosecution of his work.