Significant

TEXT 1: Gattaca, Human ambition can be a positive drive when there are challenges to overcome.
Symbols: Swimming, Staircase, Stars, Atoms

TEXT 2: Macbeth
That ambition is dangerous without the balancing influence of morality
Soliloquy
Symbolism: Dagger, Dust
Metaphor
“Is this a dagger I see before me..?”
“A dagger of the mind, a false creation…”

TEXT 3: Ozymandias
No matter what we achieve it will always ultimately pass.
Metaphor
Symbolism: Sand, statue
Similes
“The lone and level sands stretch far away”

FILM/TEXT 4: Thanos (Infinity War, Endgame)
The ambition Thanos brings to us is his plan
Symbols: Infinity Stones (5), Gauntlet, Sacrifice, The Snap.

“The universe needed correction”
“I used the stones to destroy the stones.”
“When I’m done, half of humanity will still exist. Perfectly balanced, as all things should be… I hope they remember you.”