A person cannot be without desires, but not greedy. Gathering sand into a tower, accumulating small things into many. For climbers, losing the footprints of the past is not a pity, but losing the direction to continue moving forward is very dangerous. Climbers who aspire to the summit will not be intoxicated by any footprints along the way. The strong wind bid farewell to the sailing ship that braved the wind and waves, and mourned the light boat that drifted with the current. Pride is a kite with a broken string, fleeting; Self doubt is like a bird with trimmed wings, unable to reach the sky; Both are taboos for success. Life is like a tree, growing in the wind and rain, blooming in the sunshine, with all its flowers falling, only then can it bear abundant fruits.