In every great time there is some one idea at work which is more powerful than any other, and which shapes the events of the time and determines their ultimate issues.

No pleasure is comparable to the standing upon the vantage-ground of truth.

Philosophy when superficially studied, excites doubt, when thoroughly explored, it dispels it.

The desire of power in excess caused the angels to fall; the desire of knowledge in excess caused man to fall: but in charity there is no excess; neither can angel nor man come in danger by it.

In mathematics I can report no deficiency, except it be that men do not sufficiently understand the excellent use of Pure Mathematics.

The man who fears no truths has nothing to fear from lies.

If a man's wit be not apt to distinguish or find differences, let him study the schoolmen; for they are cymini sectores, splitters of hairs.