Above all, don't fear difficult moments. The best comes from them.

'Tis never too late to be wise.

It isn't just talent. You have to have something else. You have to have a kind of nerve.

If you look for perfection, you will never be satisfied.

There will always be someone who can't see your worth. Don't let it be you.

Human beings must always be on the watch for the coming of wonders.

The earth is the mother of all people, and all people should have equal rights upon it.

Every individual matters. Every individual has a role to play.

I find the great thing in this world is not so much where we stand, as in what direction we are moving.

It's more difficult to be simple, and it's easier to be more complicated.

I do not think it worth while to wait for enjoyment until there is some real opportunity for it.

A book must be the axe for the frozen sea inside us.