Any person desiring in his lifetime to promote the public welfare by founding, endowing, and maintaining within this state a university, college, school, seminary of learning, mechanical institute, museum, botanic garden, public park, or gallery of art, or any or all thereof, may, for such purposes, by grant in writing convey to a trustee, or any number of trustees, named in the grant, and to their successors, any property, real or personal, belonging to him and situated within this state. If he is married and the property is community property, then both husband and wife shall join in the grant.