Luxury is not a necessity to me, but beautiful and good things are.
Life swings like a pendulum backward and forward between pain and boredom.
Nothing in life is to be feared, it is only to be understood. Now is the time to understand more, so that we may fear less.
Exceptional claims demand exceptional evidence.
I'd trade all my tomorrows for a single yesterday.
Be thankful for what you have; you'll end up having more. If you concentrate on what you don't have, you will never, ever have enough
Life has its own hidden forces which you can only discover by living.
Behind every beautiful thing, there's some kind of pain.
We're born alone, we live alone, we die alone. Only through our love and friendship can we create the illusion for the moment that we're not alone.
During your life, never stop dreaming. No one can take away your dreams
There is no worse bitterness than to reach the end of your life and realized you have not lived.
If people do not believe that mathematics is simple, it is only because they do not realize how complicated life is.
Simplicity is the keynote of all true elegance.
No one has ever become poor by giving.
Don't be too timid and squeamish about your actions. All life is an experiment. The more experiments you make the better.
The natural world is the greatest source of excitement. The greatest source of visual beauty. It is the greatest source of so much in life that makes life worth living.
During the first period of a man's life the greatest danger is not to take the risk.
What would life be if we had no courage to attempt anything?
Anybody can dig a hole and plant a tree. But make sure it survives. You have to nurture it, you have to water it, you have to keep at it until it becomes rooted so it can take care or itself. There are so many enemies of trees.
Insanity in individuals is rare - but in groups, parties, nations, and epochs, it is the rule.
The future is the shape of things to come.