Because ideas have to be original only with regard to their adaptation to the problem at hand, I am always extremely interested in how others have used them...

Without a humble but reasonable confidence in your own powers you cannot be successful or happy.

Riches do not respond to wishes. They respond only to definite plans, backed by definite desires, through constant persistence.

Anticipate the difficult by managing the easy

Hell, there are no rules here - we're trying to accomplish something.

There is little success where there is little laughter.

There is nothing impossible to him who will try.

If it's me against 48, I feel sorry for the 48.

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

Don't mistake activity with achievement.

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

It had long since come to my attention that people of accomplishment rarely sat back and let things happen to them. They went out and happened to things.

Whether it's Google or Apple or free software, we've got some fantastic competitors and it keeps us on our toes.

Success is not the key to happiness. Happiness is the key to success. If you love what you are doing, you will be successful.

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

I'm not the smartest fellow in the world, but I can sure pick smart colleagues.

Success is the doing, not the getting; in the trying, not the triumph. Success is a personal standard, reaching for the highest that is in us, becoming all that we can be. If we do our best, we are a success.

Action is the foundational key to all success.

From each according to his abilities, to each according to his needs.

I have not failed. I've just found 10,000 ways that won't work.

The finest task for an Engineer – to survey, to plan, to suggest resources and material, assemble them for task in hand, implement and produce results.