One can't dull a project better than by discussing it repeatedly.

The world runs on from one folly to another; and the man who, solely from regard to the opinion of others, and without any wish or necessity of his own, toils after gold, honour, or any other phantom, is no better than a fool.

As soon as any one belongs to a narrow creed in science, every unprejudiced and true perception is gone.

Master and Doctor are my titles; for ten years now, without repose, I held my erudite recitals and led my pupils by the nose.

Let's plunge ourselves into the roar of time, the whirl of accident; may pain and pleasure, success and failure, shift as they will -- it's only action that can make a man.

Sceptics are yet the most credulous.

How many kings are governed by their ministers, how many ministers by their secretaries? Who, in such cases, is really the chief?