As a well-spent day brings happy sleep, so life well used brings happy death.
Art is either plagiarism or revolution.
To repeat what others have said, requires education; to challenge it, requires brains.
A man is too apt to forget that in this world he cannot have everything. A choice is all that is left him.
Write a wise saying and your name will live forever.
Nothing can be so amusingly arrogant as a young man who has just discovered an old idea and thinks it is his own.
The function of science fiction is not always to predict the future but sometimes to prevent it.