What I have known with respect to myself, has tended much to lessen both my admiration, and my contempt, of others.

It is no use speaking in soft, gentle tones if everyone else is shouting.

The wisdom of one generation will be folly in the next.

I have procured air [oxygen] ... between five and six times as good as the best common air that I have ever met with.

The greater part of critics are parasites, who, if nothing had been written, would find nothing to write.

In completing one discovery we never fail to get an imperfect knowledge of others of which we could have no idea before, so that we cannot solve one doubt without creating several new ones.

The more elaborate our means of our common sense is, the less the common sense it becomes.

When we say there is a GOD, we mean that there is an intelligent designing cause of what we see in the world around us, and a being who was himself uncaused.

Every man, when he comes to be sensible of his natural rights, and to feel his own importance, will consider himself as fully equal to any other person whatever

In completing one discovery we never fail to get an imperfect knowledge of others.

Orthodoxy, my Lord,: said Bishop Warburton, in a whisper, — orthodoxy is my doxy, — heterodoxy is another man's doxy.

Your thoughts exist. Whatever you have thought today, yesterday or many years back, it is energy and it exists. Your attention activates thoughts and it is strengthened with your repetition.

I can't say I ever remember getting less than a whole child in my 29 years here.They come in whole and I teach 'em that way.

Giving birth was easier than having a tattoo.

Fabricating answers to unanswerable questions is the domain of religion. A deity model is not the default alternative to a scientific mystery.

A lie always needs a truth for a handle to it. The worst lies are those whose blade is false, but whose handle is true.

Books are seldom useful unless they are also beautiful.

While many conclusions are drawn... the process of asking questions is more important than the answers... an ongoing process of discovery.

Dissimulation creeps gradually into the minds of men.

You can avoid the press if you really want to and I don't walk around with five security guards either because I think that just draws attention.

I have had to eat my own words many times, and I have found it a very nourishing diet.