It's always too early to quit.

Things do not happen. Things are made to happen.

By failing to prepare, you are preparing to fail.

Wherever you are - be all there.

Expect problems and eat them for breakfast.

Be thine own palace, or the world's thy jail.

The most effective way to do it, is to do it.

The wise does at once what the fool does at last.

Know or listen to those who know.