"Some months ago I took the liberty of troubling you for a reference to Laplace. In your reply for which it still rema…"

"Mr. Gregory: Late Fellow of Trinity College, Cambridge, and author of the -well-known Examples. Few in so short a lif…"

"I have spoken of the advantages of leisure and opportunity for improvement, as of a right to which you were entitled.…"

"The last subject to which I am desirous to direct your attention as to a means of self-improvement, is that of philan…"

"In presenting this Work to public notice, I deem it not irrelevant to observe, that speculations similar to those whi…"

"THEY who are acquainted with the present state of the theory of Symbolical Algebra, are aware, that the validity of t…"

"That to the existing forms of Analysis a quantitative interpretation is assigned, is the result of the circumstances …"

"A successful attempt to express logical propositions by symbols, the laws of whose combinations should be founded upo…"

"I am now about to set seriously to work upon preparing for the press an account of my theory of Logic and Probabiliti…"

"You will feel interested to know the fate of my mathematical speculations in Cambridge. One of the papers is already …"