I don't think necessity is the mother of invention. Invention ... arises directly from idleness, possibly also from laziness. To save oneself trouble.

When you're at the end of your rope, tie a knot and hold on

There is no passion to be found playing small - in settling for a life that is less than the one you are capable of living.

Only in the darkness, you are able to see the stars.

When I'm inspired, I get excited because I can't wait to see what I'll come up with next.

A hero is no braver than an ordinary man, but he is brave five minutes longer.

The present is theirs; the future, for which I really worked, is mine.

I'm sorry I wrote you such a long letter; I didn't have time to write a short one.

We cannot do everything at once, but we can do something at once.

Never look back unless you are planning to go that way.

And, when you want something, all the universe conspires in helping you to achieve it.

I don't know who my grandfather was; I'm much more concerned to know what his grandson will be.

I invented my life by taking for granted that everything I did not like would have an opposite, which I would like.

Everything you can imagine is real.

All wealth is the product of labor.

If we ever forget that we're one nation under God, then we will be one nation gone under.

Always do what is right. It will gratify half of mankind and astound the other.

The great art of life is sensation, to feel that we exist, even in pain.

Everything you want is out there waiting for you to ask. Everything you want also wants you. But you have to take action to get it.

Work gives you meaning and purpose and life is empty without it.

They deem me mad because I will not sell my days for gold; and I deem them mad because they think my days have a price.