Do not weep do not wax indignant. Understand.
Be thine own palace, or the world's thy jail.
The dog that trots about finds a bone.
Always desire to learn something useful.
Never complain and never explain.
Without hard work, nothing grows but weeds.
Be gentle to all and stern with yourself.
Problems are not stop signs, they are guidelines.
Only the educated are free.
To know oneself, one should assert oneself.
Triumphant science and technology are only at the threshold of man's command over sources of energy so stupendous that, if used for military purposes, they can wipe out our entire civilization.