Pray thee, spare, thyself at times: for it becomes a wise man sometimes to relax the high pressure of his attention to work.

To pretend angels do not exist because they are invisible is to believe we never sleep because we don't see ourselves sleeping.

The human mind may perceive truth only through thinking, as is clear from Augustine.

If, then, you are looking for the way by which you should go, take Christ, because He Himself is the way.

Beware the man of a single book.

For those with faith, no evidence is necessary; for those without it, no evidence will suffice.

Faith does not quench desire, but inflames it.