The first great principle that ought to occupy the attention of mankind, that should be understood by the child and the adult, and which is the main spring of all action, whether people understand it or not, is the principle of {134} improvement. The principle of increase, of exaltation, of adding to that we already possess, is the grand moving principle and cause of the actions of the children of men. No matter what their pursuits are, in what nation they were born, with what people they have been associated, what religion they profess, or what politics they hold, this is the main spring of the actions of the people, embracing all the powers necessary in performing the duties of life. 2:91. _Man to Endure Forever_--Hear it, all ye Latter-day Saints! Will you spend the time of your probation for naught, and fool away your existence and being? You were organized, and brought into being, for the purpose of enduring forever, if you fulfil the measure of your creation, pursue the right path, observe the requirements of the celestial law, and obey the commandments of our God. 1:113. We are urged by the Spirit to refrain from articles which tend to death, to preserve this life, which is the most precious life given to mortal beings preparatory to an immortal life. It is our business to prepare to live here to do good. Instead of crying to the people, prepare to die, our cry is, prepare to live forever. These mortal houses will drop off sometime, and when they are cleansed and purified, sanctified and glorified, we shall inherit them again forever and ever. Let all the Saints pursue a course to live. 12:209. Mankind, in general, do not stop to reflect, they are pressing headlong to grasp the whole world if possible; each individual is for himself, and he is ignorant of the design the Almighty had in his creation and existence in this life. To obtain a knowledge of this design is a duty obligatory upon all the sons and daughters of Adam. 1:334. _The Business of Life_--The only business that we have {135} on hand is to build up the Kingdom of God and prepare the way of the Son of Man. 5:230.