Man is but a reed, the most feeble thing in nature; but he is a thinking reed.
The eternal silence of these infinite spaces frightens me.
The only thing that consoles us for our miseries is diversion. And yet it is the greatest of our miseries. For it is that above all which prevents us thinking about ourselves and leads us imperceptibly to destruction.
Human subtlety...will never devise an invention more beautiful, more simple or more direct than does nature, because in her inventions nothing is lacking, and nothing is superfluous.
It is just as foolish to complain that people are selfish and treacherous as it is to complain that the magnetic field does not increase unless the electric field has a curl. Both are laws of nature.
Nature, considered rationally, that is to say, submitted to the process of thought, is a unity in diversity of phenomena; a harmony, blending together all created things, however dissimilar in form and attributes; one great whole animated by the breath of life.