It's always too early to quit.

To know oneself, one should assert oneself.

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

The secret of getting ahead is getting started.

Wherever you are - be all there.

Go for it now. The future is promised to no one.

Problems are not stop signs, they are guidelines.

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

If you're going through hell, keep going.