Observe, Remember, Compare.

Leave the beaten track behind occasionally and dive into the woods.

We are all too much inclined, I think, to walk through life with our eyes shut. There are things all round us and right at our very feet that we have never seen, because we have never really looked.

The great advantage [the telephone] possesses over every other form of electrical apparatus consists in the fact that it requires no skill to operate the instrument.

A man, as a general rule, owes very little to what he is born with - a man is what he makes of himself.

The day will come when the man at the telephone will be able to see the distant person to whom he is speaking.

I have had the feeling that a properly constructed flying-machine should be capable of being flown as a kite; and conversely, that a properly constructed kite should be capable of use as a flying-machine when driven by its own propellers.