No horse gets anywhere until he is harnessed. No stream or gas drives anything until it is confined. No Niagara is ever turned into light and power until it is tunneled. No life ever grows great until it is focused, dedicated, disciplined.

There is no man more dangerous, in a position of power, than he who refuses to accept as a working truth the idea that all a man does should make for rightness and soundness, that even the fixing of a tariff rate must be moral.

It's a life's journey of finding ourselves, finding our power, and living for yourself, not for everyone else.

In the next 10 years, I expect at least five billion people worldwide to own smartphones, giving every individual with such a phone instant access to the full power of the Internet, every moment of every day.

Technology is like water it wants to find its level. So if you hook up your computer to a billion other computers, it just makes sense that a tremendous share of the resources you want to use - not only text or media but processing power too - will be located remotely.

The disruptive powers of excessive national fecundity may have played a greater part in bursting the bonds of convention than either the power of ideas or the errors of autocracy.

There is this power that comes with being famous.

But the power of instruction is seldom of much efficacy, except in those happy dispositions where it is almost superfluous.

The power to wage war is the power to wage war successfully.

The principles of a free constitution are irrecoverably lost, when the legislative power is nominated by the executive.