It's the familiar love-hate syndrome of seduction: "I don't really care what it is I say, I care only that you like it."

It is possible that I am dreaming right now and that all of my perceptions are false.

I should consider that I know nothing about physics if I were able to explain only how things might be, and were unable to demonstrate that they could not be otherwise.

Hence reason also demands that, since our thoughts cannot all be true because we are not wholly perfect, what truth they do possess must inevitably be found in the thoughts we have when awake, rather than in our dreams.

The object of music is a Sound. The end; to delight, and move various Affections in us.

It is not enough to have a good mind. The main thing is to use it well.

[About Pierre de Fermat] It cannot be denied that he has had many exceptional ideas, and that he is a highly intelligent man. For my part, however, I have always been taught to take a broad overview of things, in order to be able to deduce from them general rules, which might be applicable elsewhere.