The ultimate authority must always rest with the individual's own reason and critical analysis.

It is neither good nor bad, but thinking makes it so.

Better mad with the rest of the world than wise alone.

Destiny is not a passive agent that lies in the lap of the Gods, but is an active instrument that lies in your own hands to shape as you will.

The greatest of wealth is the richness of the soul.

A house is not a home unless it contains food and fire for the mind as well as the body.

Experience keeps a dear school, but fools will learn in no other.

Strength does not come from physical capacity. It comes from an indomitable will.

Judge not unless you judge yourself.

Never ruin an apology with an excuse.

Every aquarium will eventually leak.

Science has not yet taught us if madness is or is not the sublimity of the intelligence.

I don't like definitions, but if there is a definition of freedom, it would be when you have control over your reality to transform it, to change it, rather than having it imposed upon you. You can't really ask for more than that.

We thought that we had the answers, it was the questions we had wrong.

Be realistic: Plan for a miracle

Nobody has the power to take two steps together; you can take only one step at a time.

There is always time to add a word, never to withdraw one.

What can't be cured must be endured.

A friend to all is a friend to none

You always admire what you really don't understand.

One who deceives will always find those who allow themselves to be deceived.