That is, of course, until you actually take them up on that offer. Then you’re called names and are accused of “attacking” them.

Teachers of false doctrine always speak out of both sides of their mouth and they always want to be left alone; preferring to operate in the darkness without any resistance. And they always–without fail–mischaracterize those who interfere with their spreading of false doctrine.

I think a full, free talk is frequently of great use; we want nothing secret nor underhanded, and I for one want no association with things that cannot be talked about and will not bear investigation.
John Taylor, Journal of Discourses, Volume 20, Page 264

I say to the whole world, receive the truth, no matter who presents it to you. Take up the Bible, compare the religion of the Latter-day Saints with it, and see if it will stand the test.
Brigham Young, Journal of Discourses, Volume 16, Page 46

If this is not correct doctrine then I am in error, and if I am in error I want to be corrected.
Joseph F. Smith, Journal of Discourses, Volume 20, Page 31

If a faith will not bear to be investigated; if its preachers and professors are afraid to have it examined, their foundation must be very weak.
George A. Smith, Journal of Discourses, Volume 14, Page 216

The Book of Mormon can and should be tested. It invites criticism.
Hugh Nibley, An Approach to the Book of Mormon, Page 13

Convince us of our errors of doctrine, if we have any, by reason, by logical arguments, or by the word of God, and we will be ever grateful for the information, and you will ever have the pleasing reflection that you have been instrumental in the hands of God redeeming your fellow beings from the darkness which you may see enveloping their minds. Come, then, let us reason together, and try to discover the true light upon all subjects, connected with our temporal or eternal happiness; and if we disagree, in our judgments, let us impute it to the weakness and imperfections of our fallen natures, and let us pity each other, and endeavor with patience and meekness to reclaim from error, and save the immortal soul from an endless death.
Orson Pratt, The Seer, Pages 15-16

If any man has a truth that we have not got, we say, “Let us have it.” I am willing to exchange all the errors and false notions I have for one truth, and should consider that I had made a good bargain. We are not afraid of light and truth. Our religion embraces every truth in heaven, earth or hell; it embraces all truth.
Wilford Woodruff, Journal of Discourses, Volume 18, Page 117

The doctrines of false teachers will not stand the test when tried by the accepted standards of measurement, scriptures.
The Millennial Star, Volume 96, Pages 33-34