I had learnt from experience that many false opinions may be exchanged for true ones, without in the least altering the habits of mind of which false opinions are made.

Miracles have no claim whatever to the character of historical facts and are wholly invalid as evidence of any revelation.

The beliefs which we have most warrant for, have no safeguard to rest on, but a standing invitation to the whole world to prove them unfounded.

There are many truths of which the full meaning cannot be realized until personal experience has brought it home.

So natural to mankind is intolerance ... that religious freedom has hardly anywhere been practically realized.

God is a word to express, not our ideas, but the want of them.

There is always need of persons not only to discover new truths, and point out when what were once truths are true no longer, but also to commence new practices, and set the example of more enlightened conduct, and better taste and sense in human life.