Be gentle to all and stern with yourself.
Without hard work, nothing grows but weeds.
If you're going through hell, keep going.
Begin to be now what you will be hereafter.
You never know what motivates you.
If you can dream it, you can do it.
Always desire to learn something useful.
Who seeks shall find.
Be thine own palace, or the world's thy jail.
Either you run the day or the day runs you.
It's amazing that something only an atom thick can be an impenetrable barrier. You can have gas on one side and vacuum or liquid on the other, and with a wall only one atom thick, nothing would go through it.