If you want to live a happy life, tie it to a goal, not to people or things.
Try not to become a man of success, but rather try to become a man of value.
we can understand almost anything, but we can't understand how we understand.
If you can’t explain it simply, you don’t understand it well enough.
Problems cannot be solved by the same level of thinking that created them.
Anyone who has never made a mistake has never tried anything new.
I know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones.
The world is a dangerous place to live; not because of the people who are evil, but because of the people who don't do anything about it.
The only reason for time is so that everything doesn't happen at once.
Learn from yesterday, live for today, hope for tomorrow.
You have to learn the rules of the game. And then you have to play better than anyone else.
Anyone who doesn’t take truth seriously in small matters cannot be trusted in large ones either.
The only source of knowledge is experience
Everything should be made as simple as possible, but not simpler.
Life is change -Growth is optional- Choose wisely.
Logic will get you from A to B. Imagination will take you everywhere.
Any intelligent fool can make things bigger and more complex. It takes a touch of genius and a lot of courage to move in the opposite direction.
Imagination is everything. It is the preview of life's coming attractions.
Women marry men hoping they will change. Men marry women hoping they will not. So each is inevitably disappointed.
The world will not be destroyed by those who do evil, but by those who watch them without doing anything.
It is strange to be known so universally and yet to be so lonely.
There are only two ways to live your life. One is as though nothing is a miracle. The other is as though everything is a miracle.
Any man who reads too much and uses his own brain too little falls into lazy habits of thinking.
I am enough of an artist to draw freely upon my imagination. Imagination is more important than knowledge. Knowledge is limited. Imagination encircles the world.
Insanity: doing the same thing over and over again and expecting different results.
Scientists investigate that which already is;Engineers create that which has never been.
The difference between stupidity and genius is that genius has its limits.
We must find a way, or we will make one.
Weakness of attitude becomes weakness of character.
I believe that a simple and unassuming manner of life is best for everyone, best both for the body and the mind.
Two things are infinite: the universe and human stupidity and I'm not sure about the the universe.
The idle man does not know what it is to enjoy rest.
May the dreams of your past be the reality of your future.
Sometimes you put walls up not to keep people out, but to see who cares enough to break them down.
Gravity is not responsible for people falling in love.
The most beautiful thing we can experience is the mysterious. It is the source of all true art and science.
To understand the world one must not be worrying about one's self.
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