"Keep on going and the chances are you will stumble on something, perhaps when you are least expecting it. I have never heard of anyone stumbling on something sitting down."
"Know the true value of time; snatch, seize, and enjoy every moment of it. No idleness; no laziness; no procrastination; never put off till tomorrow what you can do today."
"Knowledge is a comfortable and necessary retreat and shelter for us in advanced age, and if we do not plant it while young, it will give us no shade when we grow old."