The more we do, the more we can do; the more busy we are, the more leisure we have.
Every scientific fulfillment raises new questions; it asks to be surpassed and outdated.
When all is summed up, a man never speaks of himself without loss; his accusations of himself are always believed; his praises never.
Mankind's worst enemy is fear of work.
Those who live on vanity must, not unreasonably, expect to die of mortification.
Before every action ask yourself: Will this bring more monkeys on my back. Will the result of my action be a blessing or a heavy burden?
The confidence which we have in ourselves gives birth to much of that which we have in others.
We are more interested in making others believe we are happy than in trying to be happy ourselves.
Many people think that if they were only in some other place, or had some other job, they would be happy. Well, that is doubtful. So get as much happiness out of what you are doing as you can and don't put off being happy until some future date.
Few cases of eyestrain have been developed by looking on the bright side of things.