Whoever shall introduce into public affairs the principles of primitive Christianity will change the face of the world.

No employment can be managed without arithmetic, no mechanical invention without geometry.

You may delay, but time will not.

Let every one ascertain his special business and calling, and then stick to it if he wants to be successful.

I think also, that general virtue is more probably to be expected and obtained from the education of youth, than from exhortations of adult persons; bad habits and vices of the mind being, like diseases of the body, more easily prevented than cured. I think moreover, that talents for the education of youth are the gift of God; and that he on whom they are bestowed, whenever a way is opened for use of them, is as strongly called as if he heard a voice from heaven.

It is the man and woman united that makes the complete human being. Separate she lacks his force of body and strength of reason; he her softness, sensibility and acute discernment. Together they are most likely to succeed in the world.

The rapid progress of the sciences makes me sorry, at times, that I was born so soon. Imagine the power that man will have over matter, a few hundred years from now. We may learn how to remove gravity from large masses, and float them over great distances. Agriculture will double its produce with less labor. All diseases will surely be cured... even old age. If only the moral sciences could be improved as well. Perhaps men would cease to be wolves to one another... and human beings could learn to be human.