There is something in our minds like sunshine and the weather, which is not under our control. When I write, the best things come to me from I know not where.

With God thoughts are colors, with us they are pigments-even the most abstract one may be accompanied by physical pain.

The construction of the universe is certainly very much easier to explain than is that of the plant.

We cannot remember too often that when we observe nature, and especially the ordering of nature, it is always ourselves alone we are observing.

The man was such an intellectual he was of almost no use.

Man is to be found in reason, God in the passions.

It is a great shame; most of our words are misused tools / which often still smell of the mud in which previous owners / desecrated them.