In our natural body every part has a necessary sympathy with every other; and all together form, by their harmonious conspiration, a healthy whole.

Consummated science is positively humble.

There are two sorts of ignorance: we philosophize to escape ignorance; we start from the one, we repose in the other; they are the goals from which and to which we tend; and the pursuit of knowledge is but a course between two ignorances, as human life is only a traveling from grave to grave.

The pursuit of knowledge is but a course between two ignorances, as human life is itself only a wayfaring from grave to grave.

An instinct is an agent which performs blindly and ignorantly a work of intelligence and knowledge.

In our natural body every part has a necessary sympathy with every other; and all together form, by their harmonious conspiration, a healthy whole.

Truth like a torch, the more 'tis shock, it shines.