For those of us who have a ground of knowledge which we cannot transmit to outsiders, it is perhaps more profitable to act fearlessly than to argue.

I think if I were dying and I heard of an act of injustice, it would start me up to a moment's life again.

There was never a great man who had not a great mother.

My feeling is that there is nothing in life but refraining from hurting others, and comforting those who are sad.

Our fathers had their dreams; we have ours; the generation that follows will have its own. Without dreams and phantoms man cannot exist.

Everything has two sides - the outside that is ridiculous, and the inside that is solemn.

If the bird does like its cage, and does like its sugar and will not leave it, why keep the door so very carefully shut?

Love, smoke and a cough cannot long be hid!

The secret of success is concentration ... Taste everything a little, look at everything a little; but live for one thing.

Ones real deathless wealth is all the beautiful souls one has seen and spiritually touched.

Wisdom never kicks at the iron walls it can't bring down.

The road to happiness is paved with good deeds for others.

It is for truth that God created genius.

In writing biography, fact and fiction shouldn't be mixed. And if they are, the fictional points should be printed in red ink, the facts printed in black ink.

You can go in there and change it, but so can other people.

Along with others, I have tried to pry economists away from narrow assumptions about self interest. Behavior is driven by a much richer set of values and preferences.

To say America can have strong leadership without strong character is to say we can get water without the wet.

I don't write on demand - I wait for inspiration to come.

Action makes more fortune than caution.

I spend a lot of time obsessing about getting a dignified eight hours' sleep.

Somehow I can't believe that there are any heights that can't be scaled by a man who knows the secrets of making dreams come true.