Many a man's strength is in opposition, and when he faileth, he grows out of use.

It is impossible to love and to be wise.

Silence is the sleep that nourishes wisdom.

Begin doing what you want to do now. We are not living in eternity. We have only this moment, sparkling like a star in our hand - and melting like a snowflake.

If a man will begin with certainties, he shall end in doubts, but if he will content to begin with doubts, he shall end in certainties.

All rising to great places is by a winding stair.

It's not what we profess but what we practice that gives us integrity.

Man prefers to believe what he prefers to be true.

There is a difference between happiness and wisdom: he that thinks himself the happiest man is really so; but he that thinks himself the wisest is generally the greatest fool.

Read not to contradict and confute, nor to believe and take for granted... but to weigh and consider.

Life is a marshmallow, easy to chew but hard to swallow.

If you find yourself drawn to an event against all logic, go. The universe is telling you something.

By digitizing a traditionally analog business model or process, we're effectively turning it into bits and atoms and enabling an infinite variety of possibilities.

You can be happy where you are.

One of the advantages of being disorganized is the joy of discovery.

Faith is not the opposite of reason. Faith rests squarely upon reason, but with the added component of revelation.

Pele called me the greatest footballer in the world. That is the ultimate salute to my life.

We're the richest economy in the history of the world. For the majority of Americans not to get the benefits of this extraordinarily prosperous economy, there's something fundamentally wrong.

I wouldn't count myself as being a true blues guitarist because I feel you have to live it.

I got into nuclear science when I was about 10 years old I was fascinated by the stuff. I was fascinated by the reactions and the power inside these atoms that we had the capability to unlock.

It's tiny out there...it's inconsequential. It's ironic that we had come to study the Moon and it was really discovering the Earth.