"Invincible" by Tool is a reflection on the struggle to remain relevant and to preserve the stories of one's accomplishments despite the inevitability of aging and time passing. The song speaks to the difficulty of maintaining the strength and vitality of youth, as well as of accepting the passage of time and the weight of life's lessons. The protagonist conveys a valiant fight to strive despite the challenges and to proclaim their accomplishments with pride. In the end, they learn to recognize the fragility of life, accepting that the truth will always win out in the end.