If there is anything that can be called genius, it consists chiefly in the ability to give that attention to a subject which keeps it steadily in the mind, till we have surveyed it accurately on all sides.
Every conjecture we can form with regard to the works of God has as little probability as the conjectures of a child with regard to the works of a man.
The chain is only as strong as its weakest link, for if that fails the chain fails and the object that it has been holding up falls to the ground.
In every chain of reasoning, the evidence of the last conclusion can be no greater than that of the weakest link of the chain, whatever may be the strength of the rest.
But when, in the first setting out, he takes it for granted without proof, that distinctions found in the structure of all languages, have no foundation in nature; this surely is too fastidious a way of treating the common sense of mankind.
A philosopher is, no doubt, entitled to examine even those distinctions that are to be found in the structure of all languages... in that case, such a distinction may be imputed to a vulgar error, which ought to be corrected in philosophy.