He who labors diligently need never despair; for all things are accomplished by diligence and labor.
To lengthen thy life, lessen thy meals.
Don't be afraid to take a big step if one is indicated. You can't cross a chasm in two small jumps.
Even if you're on the right track, you'll get run over if you just sit there.
You cannot be mad at somebody who makes you laugh - it's as simple as that.
The ornament of a house is the friends who frequent it.
The function of science fiction is not always to predict the future but sometimes to prevent it.