"Is there a God that controls the destinies of man? If so, what are his character and designs? Is this sad life our only portion, or shall we live beyond the grave? If there is another life before us, what influence has our conduct and character here on its solemn destinies?
Are we left to our own unaided faculties to reason out from the nature of things around us the replies to these momentous questions, or has the Author of our being given some direct revelation to guide us?
If such a revelation exists, is it made accessible to all, or must one portion of our race necessarily depend on fallible and interested interpreters?
Does this revelation agree with reason and experience, and does it contain all that we need both for safe guidance and for peace of mind?
It is believed that, in the following pages, it will be seen that every mind, of even only ordinary capacity, is furnished with the means of answering all these questions, and with as much certainty as appertains to the ordinary practical questions of this life.
At the same time, it will appear that most of the difficulties and diversities of opinions in religious matters have mainly resulted from neglecting these means of obtaining truth and peace, and that the "good times coming" are all depending on the proper use of these means.
As introductory to the first main topic, it is important to refer to the fact that, in all languages, man is recognized as possessing what is called reason. He is called a reasonable being and a reasoning being, and it is claimed that it is his reason that places him at the head of creation in this world.
Again, in discussions on truth and duty, all men seem to agree that there is such a thing as reason, and that it is, more or less, to be made the umpire in settling all disputed points. It is true that very few seem to have a clear and definite idea of what this reason is, or how it is to be made an umpire. But all allow that there is such a thing, and that it has a very important office in deciding questions of truth and duty.
Then, again, among more scientific men, we hear constant reference made to our "intuitions" and our "intuitive knowledge," as if there were some fixed truths which are superior to all others. It is true, that when we come to inquire specifically as to what are these intuitions, we often find them to be acquired notions, and sometimes such as are unsupported by any evidence, or even contrary to the best kind of evidence. Nevertheless, those who use these terms all agree in the fact that there are "intuitions" and "intuitive knowledge," which are superior to any other kinds of knowledge, and involve a certainty of conviction which no reasoning can overthrow.
Then, as we advance still higher in the world of letters, we find metaphysicians and philosophers assuming that a belief in certain truths is implanted in all rational minds by the Creator as a necessary part of their constitution, and that these truths are the foundation of most of our acquired knowledge. The truths or principles of mind thus recognized are called by various names, such as reason, the principles of reason, the primary truths, the intuitions, the intuitive truths, the fundamental truths, the principles of common sense, the categories, etc.