We accept truth from all the world, wherever it is found. Our Father in Heaven is, after all, the author of all truth. Before we can accept truth, we must first know how to find it. We promise, as so few do, that each person can know with a surety what is true and what is false. No matter what principle or precept, you can know for yourself.
In order to ask a question, you have to know what you’re looking for. While God will never let you walk alone as you search, you must first be searching before He can start helping. To know if something is true, do your homework. Show some faith in Him by seeking and He will meet you half-way.
If what we teach is true, God would want you to know. Answers, however, come in response to questions. Turn to God in prayer. Ask whether it is true or not. Those who ask, truly wanting to know and willing to live according to the answer, will receive answers. God has promised this.
Watch for your answer. Very rarely will God answer prayers through great visions or spectacular manifestations. Such power He reserves for equally great moments. Instead, He teaches through small and simple means so we can learn line upon line, choosing whether we will listen and exercising faith by acting. He teaches through the quiet voice of the Holy Spirit who speaks truth to our hearts and minds.
He has promised to answer. Trust in His promise; search, ask, listen.
See also Mormon.org