Wonder is the mother of all science.

Let whoever can do so deceive me$$$ he will never bring it about that I am nothing$$$ so long as I continue to think I am something.

If you would be a real seeker after truth$$$ it is necessary that at least once in your life you doubt$$$ as far as possible$$$ all things.

Never follow anyone else's path$$$ unless youre in the woods and youre lost and you see a path. Then by all means follow that path.

Morning without you is a dwindled dawn.

We should always be open-minded$$$ but the only good reason to believe that something exists is if there is real evidence that it does.

What to the Slave is the 4th of July?

The Bible may be an arresting and poetic work of fiction$$$ but it is not the sort of book you should give your children to form their morals.

One's work may be finished someday$$$ but one's education never.

Gravity is not a version of the truth. It is the truth. Anyone who doubts it is invited to jump out a tenth-storey window.