Only the educated are free.
Be gentle to all and stern with yourself.
Be kind whenever possible. It is always possible.
Know or listen to those who know.
The secret of getting ahead is getting started.
By failing to prepare, you are preparing to fail.
Always desire to learn something useful.
Never complain and never explain.
The wise does at once what the fool does at last.
Do not weep do not wax indignant. Understand.
Science is wonderfully equipped to answer the question 'How?' but it gets terribly confused when you ask the question 'Why?'