If you think you can do it, you can.

Be gentle to all and stern with yourself.

It's always too early to quit.

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

I can, therefore I am.

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

Things do not happen. Things are made to happen.

Begin to be now what you will be hereafter.

The dog that trots about finds a bone.