A little learning is a dangerous thing but none at all is fatal.
The conquest of learning is achieved through the knowledge of languages.
... mathematics is absolutely necessary and useful to the other sciences.
All science requires mathematics.
[I]f in other sciences we should arrive at certainty without doubt and truth without error, it behooves us to place the foundations of knowledge in mathematics, in so far as disposed through it we are able to reach certainty in other sciences and truth by the exclusion of error.
A man is crazy who writes a secret in any other way than one which will conceal it from the vulgar.