Happiness depends more on the inward disposition of mind than on outward circumstances.
I don't think necessity is the mother of invention. Invention ... arises directly from idleness, possibly also from laziness. To save oneself trouble.
Work gives you meaning and purpose and life is empty without it.
We cannot solve our problems with the same thinking we used when we created them.
If you're not prepared to be wrong, you'll never come up with anything original.
You lose nothing when fighting for a cause ... In my mind the losers are those who don't have a cause they care about.
The secret of health for both mind and body is not to mourn for the past, nor to worry about the future, but to live the present moment wisely and earnestly.
We must have perserverence and above all confidence in ourselves. We must believe that we are gifted for something.
For every man there exists a bait which he cannot resist swallowing.
Aim for the highest.
My advice to other disabled people would be, concentrate on things your disability doesn't prevent you doing well, and don't regret the things it interferes with. Don't be disabled in spirit as well as physically.
A man is but the product of his thoughts. What he thinks, he becomes.
I don't care what people think or say about me, I know who I am.
Above all things, respect yourself.
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.
I believe that if you show people the problems and you show them the solutions they will be moved to act.
Truth is like the sun. You can shut it out for a time, but it ain't goin' away.
It is only when the mind is free from the old that it meets everything anew, and in that there is joy.
It's not whether you got knocked down; it's whether you get back up.
Climbing to the top demands strength, whether it is to the top of Mount Everest or to the top of your career.
Surround yourself only with people who are going to take you higher.