Be sure your wisest words are those you do not say.

It isn't the mountain ahead that wears you out; it's the grain of sand in your shoe.

Be master of your petty annoyances and conserve your energies for the big, worthwhile things. It isn't the mountain ahead that wears you out - it's the grain of sand in your shoe.

Our breath is brief, and being so Let's make our heaven here below, And lavish kindness as we go.

A promise made is a debt unpaid.

Just draw on your grit; it's so easy to quit - It's the keeping your chin up that's hard.

No man can be a failure if he thinks he's a success; If he thinks he is a winner, then he is.

The Wanderlust has got me... by the belly-aching fire

It's the steady, quiet, plodding ones who win in the lifelong race.

This is the law of the Yukon, that only the strong shall thrive; that surely the weak shall perish, and only the fit survive.

Now a promise made is a debt unpaid, and the trail has its own stern code.

Past, of not being able to change. Future, of not being able to predict. Now, to be transformed into a better past and a prosperous future.

Nostalgia, more than anything, gives us the shudder of our own imperfection. This is why with Chopin we feel so little like gods.

I should never have made my success in life if I had not bestowed upon the least thing I have ever undertaken the same attention and care that I have bestowed upon the greatest.

The gate of heaven is very low; only the humble can enter it.

Everybody welcome-especially elders who smoke.

The ability to last more than six minutes - isn't that what all men want?

Blind adoration, in the age of action, is perfectly valueless, is often embarrassing and, equally, often painful.

And if we can accept that a mother can kill her own child, how can we tell other people not to kill one another?

There are very interesting controversies within evolution; however, whether evolution occurs is not one of them. It definitely does.

Every year I want to experience something that makes me say, "this is the best day of my life."