Lighter than a feather, heavier than gold.

The density of platinum is: 21.45/cm?, and the density of gold is: 19.32/cm?. Under the same volume, platinum is heavier than gold.

1. Gold: The chemical element symbol is Au. Gold is a soft, golden, corrosion-resistant precious metal. It is malleable and can be forged. At 20°C, the density of gold is 19.32g/cm3.

2. Platinum: The chemical element symbol is Pt. Platinum is a silver-white metal with a soft texture, luster, good ductility and thermal and electrical properties. At 20°C, the density of platinum is 21.45g/cm3.

Famous aphorisms about integrity include:

1. Honesty is the first chapter of the book of wisdom. ——(USA) Jefferson

2. When credit disappears, the body has no life. ——(France) Alexandre Dumas

3. Keeping your promises is like defending your honor. ——(France) Balzac

4. The most important quality of a great personality is the word sincerity. ——(China) Lu Xun

5. Honesty and diligence should be your permanent companions. ——(USA) Franklin

6. Honesty is the lifeblood of life and the foundation of all values. ——(UK) Dresser

7. Honesty is better than all wisdom, and it is the basic condition of wisdom. ——(Germany) Kant

8. What a liar gets is that no one believes him even if he tells the truth. ——(Ancient Greece) Aesop

9. An honest person must be trustworthy to himself, and his final support is sincerity. ——(USA) Emerson

10. If you follow an upright and honest life, you will definitely have a clear conscience. ——(Former Soviet Union) Gorky

11. Honesty is a symbol of strength. It shows a person's high self-respect and inner sense of security and dignity. ——(USA) Erin Kaser