Each department of knowledge passes through three stages. The theoretic stage the theological stage and the metaphysical or abstract stage.

Positivism is a theory of knowledge according to which the only kind of sound knowledge available to human kind is that if science grounded in observation.

Nothing is destroyed until it is replaced.

The sacred formula of positivism: love as a principle, the order as a foundation, and progress as a goal.

Know yourself to improve yourself.

To reorganize society without God or King, by the systematic culture of Humanity.

Each department of knowledge passes through three stages. The theoretic stage; the theological stage and the metaphysical or abstract stage.

Everything is relative; and only that is absolute.

Woman is the most moral element in all humanity.

If we do not allow free thinking in chemistry or biology, why should we allow it in morals or politics?

Religion is an illusion of childhood, outgrown under proper education.

I tried to think of what my father would tell me. 'Don't let any boy give you shit.' But he'd never said how we should go about preventing this.

Let us set our goals too high; let us demand more of ourselves than we believe we possess

Although his time is not always our time, we can be sure that the lord keeps his promises.

You are not just a big-picture girl for me, Brooke Parker. You’re the only picture.

In that - and that is my personal view - Singapore delivers the most value, as they think about Formula One as a complete entertainment event, on and off track.

Luck can often mean simple taking advantage of a situation at the right moment, It is possible to make your luck by being always prepared.

There are so many great 19th-century photographers, and it's really my favorite period, but the amateurs did such beautiful work.

It [space] was just so incredibly adventurous and exciting to me. I just thought there was no doubt in my mind that is what I want to do when I grow up.

"Government," says Swift, "is a plain thing, and fitted to the capacity of many heads."

We live in the most amazing period in human history. We can have unlimited energy, unlimited food, provide education for everyone, clean water, all the things that have held mankind back.