The painter will produce pictures of little merit if he takes the works of others as his standard.

We see that science is eminently perfectible$$$ and that each theory has constantly to give way to a fresh one.

The idea of a good society is something you do not need a religion and eternal punishment to buttress; you need a religion if you are terrified of death.

What we do belongs to what we are$$$ and what we are is what becomes of us.

You do things and do things and nobody really has a clue.

Give a man a reputation as an early riser and he can sleep 'til noon.

Noise proves nothing. Often a hen who has laid an egg cackles as if she had laid an asteroid.

Familiarity breeds contempt and children.

A successful book is not made of what is in it$$$ but what is left out of it.

One should write only those books from whose absence one suffers. In short: the ones you want on your own desk.