The Kingdom of God is Within You by Leo Tolstoy Chapter 12 Page 219

union possible only in the truth; and to recognize and to profess the revealed truth, which is always in our power.

“But seek ye first the kingdom of God, and his righteousness, and all these things shall be added unto you.” (Matt. vi. 33.)

The sole meaning of life is to serve humanity by contributing to the establishment of the kingdom of God, which can only be done by the recognition and profession of the truth by every man.

“The kingdom of God cometh not with outward show; neither shall they say, Lo here! or, Lo there! for behold, the kingdom of God is within you.” (Luke xvii. 20, 21.)