Every man dies. Not every man really lives. William Wallace
Always desire to learn something useful. Sophocles
You are never too old to set another goal or to dream a new dream. CS Lewis
Age is an issue of mind over matter. If you don't mind, it doesn't matter. Mark Twain
Always do right. This will gratify some people and astonish the rest. Mark Twain
Anger is an acid that can do more harm to the vessel in which it is stored than to anything on which it is poured. Mark Twain
Be careful about reading health books. You may die of a misprint. Mark Twai
Better to remain silent and be thought a fool than to speak out and remove all doubt. Mark Twain
Do the thing you fear most and the death of fear is certain. Mark Twain
Don't let schooling interfere with your education.  Mark Twain