Having precise ideas often leads to a man doing nothing.

Whoever wants to accomplish great things must devote to a lot of profound thought to details.

We need to wake up from a thought that lasts too long.

In most cases, when the lion, weary of obeying its master, has torn and devoured him, its nerves are pacified and it looks round for another master before whom to grovel.

That which has always been accepted by everyone, everywhere, is almost certain to be false.

What is simple is false and what is not is useless.

A man is infinitely more complicated than his thoughts.