I, who have never willfully pained another, have no business to pain myself.

The happiness of your life depends upon the quality of your thoughts.

When you arise in the morning, think of what a precious privilege it is to be alive - to breathe, to think, to enjoy, to love.

Everything we hear is an opinion, not a fact. Everything we see is a perspective, not the truth.

It never ceases to amaze me: we all love ourselves more than other people, but care more about their opinions than our own.

You have power over your mind - not outside events. Realize this, and you will find strength.

The opinion of 10,000 men is of no value if none of them know anything about the subject.

If you are distressed by anything external, the pain is not due to the thing itself, but to your estimate of it; and this you have the power to revoke at any moment.

Whenever you are about to find fault with someone, ask yourself the following question: What fault of mine most nearly resembles the one I am about to criticize?

The object of life is not to be on the side of the majority, but to escape finding oneself in the ranks of the insane.

Very little is needed to make a happy life; it is all within yourself, in your way of thinking.

…once science had declared a thing possible, there was no escape from its eventual realization…

If I preached unity, I must act like a unifier, even at the risk of perhaps alienating some of my own colleagues.

Be kind to people who are different from you.

Who would name their kid Jack with the last words 'off' at the end of the last name? No wonder that guy is screwed up.

You can never step in the same river twice.

So many things can drive you mad as a child, not only music.

God gave me my money.

Keeping score of old scores and scars, getting even and one-upping, always makes you less than you are.

Books that kids read should be about what is going on in the world.

You must have your wits about you. No wandering minds allowed.