Few things are impossible to diligence and skill. Great works are performed not by strength, but perseverance.

You cannot change your destination overnight, but you can change your direction overnight

Vision without execution is just hallucination.

If you're trying to create a company, it's like baking a cake. You have to have all the ingredients in the right proportion.

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.

I've always thought anyone can make money. Making a life worth living, that's the real test.

For it is commonly said: accomplished labours are pleasant.

The way to get started is to quit talking and begin doing.

Don't spend time beating on a wall, hoping to transform it into a door.

The more you are in this business, the more humbled by it you become.

It is a cursed evil to any man to become as absorbed in any subject as I am in mine

Only you can control your future.

Success is most often achieved by those who don't know that failure is inevitable.

You can't just ask customers what they want and then try to give that to them. By the time you get it built, they'll want something new.

Old Professors never die, they just lose their faculties.

I have far more respect for the person with a single idea who gets there than for the person with a thousand ideas who does nothing

Tell the audience what you're going to say, say it; then tell them what you've said.

Many are stubborn in pursuit of the path they have chosen, few in pursuit of the goal.

To know what people really think, pay regard to what they do, rather than what they say.

Percentages are why I am rich.

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