People say the best things in life are free. Maybe some of the best things in life are invisible, too.
“[N]eutrons and protons . . . are . . . made up of six flavors of quarks (named ‘up,’ ‘down,’ ‘strange,’ ‘charmed,’ ‘bottom,’ and ‘top’) . . . each having three colors (red, green and blue). . . .” Francis Collins
“And the Lord opened the servant’s eyes and he saw; and, behold, the mountain was full of horses and chariots of fire. . . .” 2 Kings 6