Do one thing at a time, and while doing it put your whole soul into it to the exclusion of all else.

It is no use saying 'we are doing our best.' You have got to succeed in doing what is necessary.

Ability may get you to the top, but it takes character to keep you there.

Either you run the day or the day runs you.

There is little success where there is little laughter.

The leader of genius must have the ability to make different opponents appear as if they belonged to one category.

In the business world, the rearview mirror is always clearer than the windshield.

If your business is only to sweep a crossing, remember it is your duty to make that crossing the best swept of the world.

Most people spend more time and energy going around problems than in trying to solve them.

Take time to deliberate, but when the time for action comes, stop thinking and go in.

No tears in the writer, no tears in the reader. No surprise in the writer, no surprise in the reader.

I never did a day's work in my life. It was all fun.

If you're bored with life, if you don't get up every morning with a burning desire to do things, you don't have enough goals.

Thinking is the hardest work there is, which is probably the reason so few engage in it.

If I had eight hours to chop down a tree, I'd spend six hours sharpening my axe.

Speak softly and carry a big stick; you will go far.

Just because something doesn't do what you planned it to do doesn't mean it's useless.

Of all the things I've done, the most vital is coordinating those who work with me and aiming their efforts at a certain goal

I am thankful to all those who said NO to me. It's because of them I did it myself.

The day science begins to study non-physical phenomena, it will make more progress in one decade than in all the previous centuries of its existence.

You reach a point where you don't work for money.