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

To invent, you need a good imagination and a pile of junk.

The secret of success in life is for a man to be ready for his opportunity when it comes.

Our fatigue is often caused not by work, but by worry, frustration and resentment

I fear not the man who has practiced 10,000 kicks once, but I fear the man who had practiced one kick 10,000 times.

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

Success is not to be pursued; it is to be attracted by the person you become

I do not like to repeat successes, I like to go on to other things.

You've got to be very careful if you don't know where you're going, because you might not get there.

What I cannot create, I do not understand.

Percentages are why I am rich.

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.

Our greatest glory is not in never failing, but in rising up every time we fail.

I don't want to achieve immortality through my work... I want to achieve it through not dying.

Make them laugh, make them cry, and back to laughter. What do people go to the theatre for? An emotional exercise. I am a servant of the people. I have never forgotten that.

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

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.

Without a sense of urgency, desire loses its value.

If you don't have time to do it right, when will you have the time to do it over?

I readily absorb ideas from every source, frequently starting where the last person left off

It's a terrible thing to look over your shoulder when you are trying to lead - and find no one there