"We all feel that we must face up to the difficulties and cannot avoid them; We should keep it in mind and hope to solve it. In any case, every difficulty must have a solution, although we may not find it in life. " From this sentence, we can see the image of a scientist who is persistent in the pursuit of truth, modest and prudent, strong-willed, not afraid of failure and indomitable. William thomson's unremitting efforts for the cause of science throughout his life will always be worthy of our future generations' admiration.